#### 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}

Published by
Pearson

ISBN 10:
0-32184-874-8

ISBN 13:
978-0-32184-874-1

$a=0$

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