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All Textbook Solutions for Elementary Algebra

In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 96. 24=p20In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 97. y=6In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 98. u=15In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 99. v=72In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 100. x=39In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 101. 23y=48In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 102. 35r=75In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 103. 58w=40In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 104. 24=34xIn the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 105. 25=110aIn the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 106. 13q=56In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 107. 710x=143In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 108. 38y=14In the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 109. 712=34pIn the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 110. 1118=56qIn the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 111. 518=109uIn the following exercises, solve each equation using the Division and Multiplication Properties of Equality and check the solution. 112. 720=74vIn the following exercises, solve each equation requiring simplification. 113. 10016=4p10ppIn the following exercises, solve each equation requiring simplification. 114. 187=5t9t6tIn the following exercises, solve each equation requiring simplification. 115. 78n34n=9+2In the following exercises, solve each equation requiring simplification. 116. 512q+12q=253In the following exercises, solve each equation requiring simplification. 117. 0.25d+0.10d=60.75In the following exercises, solve each equation requiring simplification. 118. 0.05p0.01p=2+0.24In the following exercises, solve each equation requiring simplification. 119. 10(q4)57=93In the following exercises, solve each equation requiring simplification. 120. 12(d5)29=43In the following exercises, solve each equation requiring simplification. 121. 10(x+4)19=85In the following exercises, solve each equation requiring simplification. 122. 15(z+9)11=75In the following exercises, solve each equation. 123. 910x=90In the following exercises, solve each equation. 124. 512y=60In the following exercises, solve each equation. 125. y+46=55In the following exercises, solve each equation. 126. x+33=41In the following exercises, solve each equation. 127. w2=99In the following exercises, solve each equation. 128. s3=60In the following exercises, solve each equation. 129. 27=6aIn the following exercises, solve each equation. 130. a=7In the following exercises, solve each equation. 131. x=2In the following exercises, solve each equation. 132. z16=59In the following exercises, solve each equation. 133. m41=14In the following exercises, solve each equation. 134. 0.04r=52.60In the following exercises, solve each equation. 135. 63.90=0.03pIn the following exercises, solve each equation. 136. 15x=120In the following exercises, solve each equation. 137. 84=12zIn the following exercises, solve each equation. 138. 19.36=x0.2xIn the following exercises, solve each equation. 139. c0.3c=35.70In the following exercises, solve each equation. 140. y=9In the following exercises, solve each equation. 141. x=8In the following exercises, translate to an equation and then solve. 142. 187 is the product of 17 and m.In the following exercises, translate to an equation and then solve. 143. 133 is the product of 19 and n.In the following exercises, translate to an equation and then solve. 144. 184 is the product of 23 and p.In the following exercises, translate to an equation and then solve. 145. 152 is the product of 8 and q.In the following exercises, translate to an equation and then solve. 146. u divided by 7 is equal to 49 .In the following exercises, translate to an equation and then solve. 147. r divided by 12 is equal to 48 .In the following exercises, translate to an equation and then solve. 148. h divided by 13 is equal to 65 .In the following exercises, translate to an equation and then solve. 149. j divided by 20 is equal to 80 .In the following exercises, translate to an equation and then solve. 150. The quotient c and 19 is 38.In the following exercises, translate to an equation and then solve. 151. The quotient of b and 6 is 18.In the following exercises, translate to an equation and then solve. 152. The quotient of h and 26 is 52 .In the following exercises, translate to an equation and then solve. 153. The quotient k and 22 is -66.In the following exercises, translate to an equation and then solve. 154. Five-sixths of y is 15.In the following exercises, translate to an equation and then solve. 155. Three-tenths of x is 15.In the following exercises, translate to an equation and then solve. 156. Four-thirds of w is 36.In the following exercises, translate to an equation and then solve. 157. Five-halves of v is 50.In the following exercises, translate to an equation and then solve. 158. The sum of nine-tenths and g is two-thirds.In the following exercises, translate to an equation and then solve. 159. The sum of two-fifths and f is one-half.In the following exercises, translate to an equation and then solve. 160. The difference of p and one-sixth is two-thirds.In the following exercises, translate to an equation and then solve. 161. The difference of q and one-eighth is three-fourths.In the following exercises, translate into an equation and solve. 162. Kindergarten Connie’s kindergarten class has 24 children. She wants them to get into 4 equal groups. How many children will she put in each group?In the following exercises, translate into an equation and solve. 163. Balloons Ramona bought 18 balloons for a party. She wants to make 3 equal bunches. How many balloons did she use in each bunch?In the following exercises, translate into an equation and solve. 164. Tickets Mollie paid $36.25 for 5 movie tickets. What was the price of each ticket?In the following exercises, translate into an equation and solve. 165. Shopping Serena paid $12.96 for a pack of 12 pairs of sport socks. What was the price of pair of sport socks?In the following exercises, translate into an equation and solve. 166. Sewing Nancy used 14 yards of fabric to make flags for one-third of the drill team. How much fabric, would Nancy need to make flags for the whole team?In the following exercises, translate into an equation and solve. 167. MPG John’s SUV gets 18 miles per gallon (mpg). This is half as many mpg as his wife’s hybrid car. How many miles per gallon does the hybrid car get?In the following exercises, translate into an equation and solve. 168. Height Aiden is 27 inches tall. He is 38 as tall as his father. How tall is his father?In the following exercises, translate into an equation and solve. 169. Real estate Bea earned $11,700 commission for selling a house, calculated as 6100 of the selling price. What was the selling price of the house?Commission Every week Perry gets paid $150 plus 12% of his total sales amount. Solve the equation 840=150+0.12(a1250) for a, to find the total amount Perry must sell in order to be paid $840 one week.Stamps Travis bought $9.45 worth of 49-cent stamps and 21-cent stamps. The number of 21-cent stamps was 5 less than the number of 49-cent stamps. Solve the equation 0.49s+0.21(s5)=9.45 for s, to find the number of 49-cent stamps Travis bought.Frida started to solve the equation 3x=36 by adding 3 to both sides. Explain why Frida’s method will not solve the equation.Emiliano thinks x=40 is the solution to the equation 12x=80 . Explain why he is wrong.Solve: 3x+4=8 .Solve: 5a+3=37 .Solve: 5y9=16 .Solve: 3m8=19 .Solve: 6n=5n10 .Solve: 6c=7c1 .Solve: 3p14=5p .Solve: 8m+9=5m .Solve: 12j=4j+32 .Solve: 8h=4h+12 .Solve: 12x+8=6x+2 .Solve: 9y+4=7y+12 .Solve: 8q5=4q+7 .Solve: 7n3=n+3 .Solve: 2a2=6a+18 .Solve: 4k1=7k+17 .Solve: 78x12=18x2 .Solve: 76y+11=16y+8 .Solve: 2.8x+12=1.4x9 .Solve: 3.6y+8=1.2y4 .In the following exercises, solve the following equations with constants on both sides. 174. 9x3=60In the following exercises, solve the following equations with constants on both sides. 175. 12x8=64In the following exercises, solve the following equations with constants on both sides. 176. 14w+5=117In the following exercises, solve the following equations with constants on both sides. 177. 15y+7=97In the following exercises, solve the following equations with constants on both sides. 178. 2a+8=28In the following exercises, solve the following equations with constants on both sides. 179. 3m+9=15In the following exercises, solve the following equations with constants on both sides. 180. 62=8n6In the following exercises, solve the following equations with constants on both sides. 181. 77=9b5In the following exercises, solve the following equations with constants on both sides. 182. 35=13y+9In the following exercises, solve the following equations with constants on both sides. 183. 60=21x24In the following exercises, solve the following equations with constants on both sides. 184. 12p9=9In the following exercises, solve the following equations with constants on both sides. 185. 14q2=16In the following exercises, solve the following equations with variables on both sides. 186. 19z=18z7In the following exercises, solve the following equations with variables on both sides. 187. 21k=20k11In the following exercises, solve the following equations with variables on both sides. 188. 9x+36=15xIn the following exercises, solve the following equations with variables on both sides. 189. 8x+27=11xIn the following exercises, solve the following equations with variables on both sides. 190. c=3c20In the following exercises, solve the following equations with variables on both sides. 191. b=4b15In the following exercises, solve the following equations with variables on both sides. 192. 9q=442qIn the following exercises, solve the following equations with variables on both sides. 193. 5z=398zIn the following exercises, solve the following equations with variables on both sides. 194. 6y+12=5yIn the following exercises, solve the following equations with variables on both sides. 195. 4x+34=3xIn the following exercises, solve the following equations with variables on both sides. 196. 18a8=22aIn the following exercises, solve the following equations with variables on both sides. 197. 11r8=7rIn the following exercises, solve the following equations with variables and constants on both sides. 198. 8x15=7x+3In the following exercises, solve the following equations with variables and constants on both sides. 199. 6x17=5x+2In the following exercises, solve the following equations with variables and constants on both sides. 200. 26+13d=14d+11In the following exercises, solve the following equations with variables and constants on both sides. 201. 21+18f=19f+14In the following exercises, solve the following equations with variables and constants on both sides. 202. 2p1=4p33In the following exercises, solve the following equations with variables and constants on both sides. 203. 12q5=9q20In the following exercises, solve the following equations with variables and constants on both sides. 204. 4a+5=a40In the following exercises, solve the following equations with variables and constants on both sides. 205. 8c+7=3c37In the following exercises, solve the following equations with variables and constants on both sides. 206. 5y30=5y+30In the following exercises, solve the following equations with variables and constants on both sides. 207. 7x17=8x+13In the following exercises, solve the following equations with variables and constants on both sides. 208. 7s+12=5+4sIn the following exercises, solve the following equations with variables and constants on both sides. 209. 9p+14=6+4pIn the following exercises, solve the following equations with variables and constants on both sides. 210. 2z6=23zIn the following exercises, solve the following equations with variables and constants on both sides. 211. 3y4=12yIn the following exercises, solve the following equations with variables and constants on both sides. 212. 53c3=23c16In the following exercises, solve the following equations with variables and constants on both sides. 213. 74m7=34m13In the following exercises, solve the following equations with variables and constants on both sides. 214. 825q=35q+6In the following exercises, solve the following equations with variables and constants on both sides. 215. 1115a=45a+4In the following exercises, solve the following equations with variables and constants on both sides. 216. 43n+9=13n9In the following exercises, solve the following equations with variables and constants on both sides. 217. 54a+15=34a5In the following exercises, solve the following equations with variables and constants on both sides. 218. 14y+7=34y3In the following exercises, solve the following equations with variables and constants on both sides. 219. 35p+2=45p1In the following exercises, solve the following equations with variables and constants on both sides. 220. 14n+8.25=9n+19.60In the following exercises, solve the following equations with variables and constants on both sides. 221. 13z+6.45=8z+23.75In the following exercises, solve the following equations with variables and constants on both sides. 222. 2.4w100=0.8w+28In the following exercises, solve the following equations with variables and constants on both sides. 223. 2.7w80=1.2w+10In the following exercises, solve the following equations with variables and constants on both sides. 224. 5.6r+13.1=3.5r+57.2In the following exercises, solve the following equations with variables and constants on both sides. 225. 6.6x18.9=3.4x+54.7Concert tickets At a school concert the total value of tickets sold was $1506. Student tickets sold for $6 and adult tickets sold for $9. The number of adult tickets sold was 5 less than 3 times the number of student tickets. Find the number of student tickets sold, s, by solving the equation 6s+27s45=1506 .Making a fence Jovani has 150 feet of fencing to make a rectangular garden in his backyard. He wants the length to be 15 feet more than the width. Find the width, w, by solving the equation 150=2w+30+2w .Solve the equation 65y815y+7 explaining all the steps of your solution as in the examples in this section.Solve the equation 10x+14=2x+38 explaining all the steps of your solution as in the examples in this section.When solving an equation with variables on both sides, why is it usually better to choose the side with the larger coefficient of x to be the “variable” side?Is x=2 a solution to the equation 52x=4x+1 ? How do you know?Solve: 5(x+3)=35 .Solve: 6(y4)=18 .Solve: (y+8)=2 .Solve: (z+4)=12 .Solve: 2(m4)+3=1 .Solve: 7(n3)8=15 .Solve: 13(6u+3)=7u .Solve: 23(9x12)=8+2x .Solve: 123(4j+3)=17 .Solve: 68(k2)=10 .Solve: 6(p3)7=5(4p+3)12 .Solve: 8(q+1)5=3(2q4)1 .Solve: 6[42(7y1)]=8(138y) .Solve: 12[15(4z1)]=3(24+11z) .Solve: 0.55(100n+8)=0.6(85n+14) .Solve: 0.15(40m120)=0.5(60m+12) .Classify the equation as a conditional equation, an identity, or a contradiction and then state the solution: 4+9(3x7)=42x13+23(3x2)Classify the equation as a conditional equation, an identity, or a contradiction and then state the solution: 8(13x)+15(2x+7)=2(x+50)+4(x+3)+1Classify the equation as a conditional equation, an identity, or a contradiction and then state the solution: 11(q+3)5=19Classify the equation as a conditional equation, an identity, or a contradiction and then state the solution: 6+14(k8)=95Classify the equation as a conditional equation, an identity, or a contradiction and then state the solution: 12c+5(5+3c)=3(9c4)Classify the equation as a conditional equation, an identity, or a contradiction and then state the solution: 4(7d+18)=13(3d2)11dIn the following exercises, solve each linear equation. 232. 15(y9)=60In the following exercises, solve each linear equation. 233. 21(y5)=42In the following exercises, solve each linear equation. 234. 9(2n+1)=36In the following exercises, solve each linear equation. 235. 16(3n+4)=32In the following exercises, solve each linear equation. 236. 8(22+11r)=0In the following exercises, solve each linear equation. 237. 5(8+6p)=0In the following exercises, solve each linear equation. 238. (w12)=30In the following exercises, solve each linear equation. 239. (t19)=28In the following exercises, solve each linear equation. 240. 9(6a+8)+9=81In the following exercises, solve each linear equation. 241. 8(9b4)12=100In the following exercises, solve each linear equation. 242. 32+3(z+4)=41In the following exercises, solve each linear equation. 243. 21+2(m4)=25In the following exercises, solve each linear equation. 244. 51+5(4q)=56In the following exercises, solve each linear equation. 245. 6+6(5k)=15In the following exercises, solve each linear equation. 246. 2(9s6)62=16In the following exercises, solve each linear equation. 247. 8(6t5)35=27In the following exercises, solve each linear equation. 248. 3(102x)+54=0In the following exercises, solve each linear equation. 249. 2(117x)+54=4In the following exercises, solve each linear equation. 250. 23(9c3)=22In the following exercises, solve each linear equation. 251. 35(10x5)=27In the following exercises, solve each linear equation. 252. 15(15c+10)=c+7In the following exercises, solve each linear equation. 253. 14(20d+12)=d+7In the following exercises, solve each linear equation. 254. 18(9r+7)=16In the following exercises, solve each linear equation. 255.Y1 15(3r+8)=28In the following exercises, solve each linear equation. 256. 5(n1)=19In the following exercises, solve each linear equation. 257. 3(m1)=13In the following exercises, solve each linear equation. 258. 114(y8)=43In the following exercises, solve each linear equation. 259. 182(y3)=32In the following exercises, solve each linear equation. 260. 248(3v+6)=0In the following exercises, solve each linear equation. 261. 355(2w+8)=10In the following exercises, solve each linear equation. 262. 4(a12)=3(a+5)In the following exercises, solve each linear equation. 263. 2(a6)=4(a3)In the following exercises, solve each linear equation. 264. 2(5u)=3(2u+6)In the following exercises, solve each linear equation. 265. 5(8r)=2(2r16)In the following exercises, solve each linear equation. 266. 3(4n1)2=8n+3In the following exercises, solve each linear equation. 267. 9(2m3)8=4m+7In the following exercises, solve each linear equation. 268. 12+2(53y)=9(y1)2In the following exercises, solve each linear equation. 269. 15+4(25y)=7(y4)+4In the following exercises, solve each linear equation. 270. 8(x4)7x=14In the following exercises, solve each linear equation. 271. 5(x4)4x=14In the following exercises, solve each linear equation. 272. 5+6(3s5)=3+2(8s1)In the following exercises, solve each linear equation. 273. 12+8(x5)=4+3(5x2)In the following exercises, solve each linear equation. 274. 4(u1)8=6(3u2)7In the following exercises, solve each linear equation. 275. 7(2n5)=8(4n1)9In the following exercises, solve each linear equation. 276. 4(p4)(p+7)=5(p3)In the following exercises, solve each linear equation. 277. 3(a2)(a+6)=4(a1)In the following exercises, solve each linear equation. 278. 9(9y+5)3(3y7)=16(4y2)In the following exercises, solve each linear equation. 279. (7m+4)(2m5)=14(5m3)In the following exercises, solve each linear equation. 280. 4[58(4c3)]=12(113c)8In the following exercises, solve each linear equation. 281. 5[92(6d1)]=11(410d)139In the following exercises, solve each linear equation. 282. 3[9+8(4h3)]=2(512h)19In the following exercises, solve each linear equation. 283. 3[14+2(15k6)]=8(35k)24In the following exercises, solve each linear equation. 284. 5[2(m+4)+8(m7)]=2[3(5+3)(213m)]In the following exercises, solve each linear equation. 285. 10[5(n+1)+4(n1)]=11[7(5+n)(253n)]In the following exercises, solve each linear equation. 286. 5(1.2u4.8)=12In the following exercises, solve each linear equation. 287. 4(2.5v0.6)=7.6In the following exercises, solve each linear equation. 288. 0.25(q6)=0.1(q+18)In the following exercises, solve each linear equation. 289. 0.2(p6)=0.4(p+14)In the following exercises, solve each linear equation. 290. 0.2(30n+50)=28In the following exercises, solve each linear equation. 291. 0.5(16m+34)=15In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 292. 23z+19=3(5z9)+8z+46In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 293. 15y+32=2(10y7)5y+46In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 294. 5(b9)+4(3b+9)=6(4b5)7b+21In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 295. 9(a4)+3(2a+5)=7(3a44)6a+7In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 296. 18(5j1)+29=47In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 297. 24(3d4)+100=52In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 298. 22(3m4)=8(2m+9)In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 299. 30(2n1)=5(10n+8)In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 300. 7v+42=11(3v+8)2(13v1)In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 301. 18u51=9(4u+5)6(3u10)In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 302. 3(6q9)+7(q+4)=5(6q+8)5(q+1)In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 303. 5(p+4)+8(2p1)=9(3p5)6(p2)In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 304. 12(6h1)=8(8h+5)4In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 305. 9(4k7)=11(3k+1)+4In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 306. 45(3y2)=9(15y6)In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 307. 60(2x1)=15(8x+5)In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 308. 16(6n+15)=48(2n+5)In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 309. 36(4m+5)=12(12m+15)In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 310. 9(14d+9)+4d=13(10d+6)+3In the following exercises, classify each equation as a conditional equation, an identity, or a contradiction and then state the solution. 311. 11(8c+5)8c=2(40c+25)+5Fencing Micah has 44 feet of fencing to make a dog run in his yard. He wants the length to be 2.5 feet more than the width. Find the length, L, by solving the equation 2L+2(L2.5)=44 .Coins Rhonda has $1.90 in nickels and dimes. The number of dimes is one less than twice the number of nickels. Find the number of nickels, n, by solving the equation 0.05n+0.10(2n1)=1.90 .Using your own words, list the steps in the general strategy for solving linear equations.Explain why you should simplify both sides of an equation as much as possible before collecting the variable terms to one side and the constant terms to the other side.What is the first step you take when solving the equation 37(y4)=38 ? Why is this your first step?Solve the equation 14(8x+20)=3x4 explaining all the steps of your solution as in the examples in this section.Solve: 14x+12=58 .Solve: 18x+12=14 .Solve: 7=12x+34x23x .Solve: 1=12u+14u23u .Solve: x+13=16x12 .Solve: c+34=12c14 .Solve: 11=12(6p+2) .Solve: 8=13(9q+6) .Solve: 15(n+3)=14(n+2) .Solve: 12(m3)=14(m7) .Solve: 4y73=y6 .Solve: 2z54=z8 .Solve: b10+2=b4+5 .Solve: c6+3=c3+4 .Solve: 3r+56+1=4r+33 .Solve: 2s+32+1=3s+24 .Solve: 0.14h+0.12=0.35h2.4 .Solve: 0.65k0.1=0.4k0.35 .Solve: 0.25n+0.05(n+5)=2.95 .Solve: 0.10d+0.05(d5)=2.15 .In the following exercises, solve each equation with fraction coefficients. 318. 14x12=34In the following exercises, solve each equation with fraction coefficients. 319. 34x12=14In the following exercises, solve each equation with fraction coefficients. 320. 56y23=32In the following exercises, solve each equation with fraction coefficients. 321. 56y13=76In the following exercises, solve each equation with fraction coefficients. 322. 12a+38=34In the following exercises, solve each equation with fraction coefficients. 323. 58b+12=34In the following exercises, solve each equation with fraction coefficients. 324. 2=13x12x+23xIn the following exercises, solve each equation with fraction coefficients. 325. 2=35x13x+25xIn the following exercises, solve each equation with fraction coefficients. 326. 14m45m+12m=1In the following exercises, solve each equation with fraction coefficients. 327. 56n14n12n=2In the following exercises, solve each equation with fraction coefficients. 328. x+12=23x12In the following exercises, solve each equation with fraction coefficients. 329. x+34=12x54In the following exercises, solve each equation with fraction coefficients. 330. 13w+54=w14In the following exercises, solve each equation with fraction coefficients. 331. 32z+13=z23In the following exercises, solve each equation with fraction coefficients. 332. 12x14=112x+16In the following exercises, solve each equation with fraction coefficients. 333. 12a14=16a+112