Each step in a procedure to solve this equation is shown.   Equation:   5x − 7 = 3(x+1)5x - 7 = 3x+1  Step 1:   5x − 7 = 3x + 35x - 7 = 3x + 3 Step 2:   2x − 7 = 32x - 7 = 3 Step 3:   2x = −42x = -4  Step 4:   x = −2x = -2    In which step is the first error made

Algebra and Trigonometry (6th Edition)
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ISBN:9780134463216
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ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Each step in a procedure to solve this equation is shown.

 

Equation:   5x − 7 = 3(x+1)5x - 7 = 3x+1 

Step 1:   5x − 7 = 3x + 35x - 7 = 3x + 3

Step 2:   2x − 7 = 32x - 7 = 3

Step 3:   2x = −42x = -4 

Step 4:   x = −2x = -2 

 

In which step is the first error made?

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