Chapter 6, Problem 9A

Solve the following examples of combined operations in Exercises 7 through 9.
9.a. $\frac{3}{4}-\frac{2}{3}\times \frac{1}{4}$
b. $\left(\frac{3}{4}-\frac{2}{3}\right)\times \frac{1}{4}$
c. $4\frac{1}{2}\times \left(3\frac{1}{2}+\frac{2}{3}\right)-\frac{5}{8}$
d. $7\frac{1}{2}÷2\frac{1}{4}+4\frac{1}{2}$
e. $7\frac{1}{2}÷\left(2\frac{1}{4}+4\frac{1}{2}\right)$