Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 3 - Solving Inequalities - 3-7 Absolute Value Equations and Inequalities - Practice and Problem-Solving Exercises - Page 211: 24


d=−8 or d=0

Work Step by Step

2|d+4|=8⟶ divide each side by 2 2|d+4|÷2=8÷2⟶ divide |d+4|=4⟶ definition of absolute value d+4=−4 or d+4=4⟶ subtract 4 from each part d+4−4=−4−4 or d+4−4=4−4⟶ subtract d=−8 or d=0
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