Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 11 - Additional Topics - 11.1 - Equations and Inequalities Involving Absolute Value - Problem Set 11.1: 50

Answer

Any real number except -7.

Work Step by Step

Absolute values will always be greater than 0 except for the value that makes them 0. Thus, this statement is true whenever the value inside the absolute value bars is not 0, which occurs whenever x is not $-7$.
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