Answer
$-12$
Work Step by Step
Substituting $x=-12$ in the given expression, $
-(-x)
,$ results to
\begin{array}{l}\require{cancel}
-(-(-12))
\\\\=
-(12)
\\\\=
-12
.\end{array}
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 1 - Introduction to Algebraic Expressions - Study Summary - Practice Exercises - Page 74: 22
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