Answer
$10$
Work Step by Step
Substituting $x$ with $-10$, then $-x$ evaluates to
\begin{array}{l}\require{cancel}
-(-10)
\\\\=
10
.\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 - Test: Chapter 1 - Page 78: 19
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