## Introductory Algebra for College Students (7th Edition)

Published by Pearson

# Chapter 1 - Section 1.1 - Introduction to Algebra: Variables and Mathematical Models - Exercise Set - Page 11: 57

not a solution

#### Work Step by Step

2(w+1) = 3(w-1);7 To check whether 7 is the solution of the given expression, substitute 7 for w. 2(7+1) = 3(7-1) (perform the operations in parentheses) 2*8 = 3*6 (multiply 2*8 and 3*6) 16 $\ne$ 18 The statement is false, because the values on both sides of the equation are different. Therefore, the number 7 is not the solution of the equation.

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