Answer
$-x=-13$
Work Step by Step
To find $-x$, set the current $x$ value that is 13 equal to $-x$.
Divide both sides by -1 gives you $x=-13$, so the answer is $-x=-13$.
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 1 - Section 1.2 - Operations with Real Numbers and Simplifying Algebraic Expressions - Exercise Set - Page 27: 30
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