#### Answer

$z=9$

#### Work Step by Step

By combining like terms and by using the properties of equality, the solution to the given equation, $
-3z+8z=45
$, is
\begin{array}{l}\require{cancel}
5z=45
\\\\
z=\dfrac{45}{5}
\\\\
z=9
.\end{array}

Published by
Pearson

ISBN 10:
0-32184-874-8

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

$z=9$

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