Answer
$x=-3,4$
Work Step by Step
The absolute value of multiple terms will change the other side to positive or negative when simplified.
$3|2x-1|=21$
$2x-1=7$
$2x=8$
$x=4$
$2x-1=-7$
$2x=-6$
$x=-3$
$x=-3,4$
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 1 - Equations and Inequalities - Exercise Set 1.6 - Page 179: 68
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