Answer
$x=-2$ or $x=-8$
Work Step by Step
$3|x+5|+6=15$
$3|x+5|=9$
$|x+5|=3$
$x+5=\pm 3$
$x=\pm 3-5$
$x=-2$ or $x=-8$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter 1, Equations and Graphs - Section 1.8 - Solving Absolute Value Equations and Inequalities - 1.8 Exercises - Page 153: 17
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