Answer
$a=0$
Work Step by Step
Using the properties of equality, the solution to the given equation, $
10=-2(a-5)
$, is
\begin{array}{l}\require{cancel}
10=-2(a)-2(-5)
\\\\
10=-2a+10
\\\\
2a=10-10
\\\\
2a=0
\\\\
a=0
.\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 2 - Equations, Inequalities, and Problem Solving - Connecting: The Concepts - Exercises - Page 134: 10
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