#### Answer

$x=21$

#### Work Step by Step

Using the properties of equality, the solution to the given equation, $
x-6=15
$, is
\begin{array}{l}\require{cancel}
x=15+6
\\\\
x=21
.\end{array}

Published by
Pearson

ISBN 10:
0-32184-874-8

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

$x=21$

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