Answer
r=1 or r=−5
Work Step by Step
4+abs(r+2)=7
4+abs(r+2)−4=7−4
abs(r+2)=3
r+2=3 or r+2=−3
r+2=3
r+2−2=3−2
r=1
r+2=−3
r+2−2=−3−2
r=−5
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 3 - Solving Inequalities - Chapter Review - Page 226: 51
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