Answer
{$-3,4$}
Work Step by Step
Given: $2x-1=7$
or, $2x=7+1 \implies x= 4$
Now, $2x-1=-7$
or, $2x=-7+1 \implies x= =-3$
Hence, {$-3,4$}
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 4 - Section 4.3 - Equations and Inequalities Involving Absolute Value - Exercise Set - Page 283: 5
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