#### Answer

$a=3$

#### Work Step by Step

Step 1. Combine like terms on the right side of the equation.
$3a+2a=(3+2)a=5a=15$
Step 2. Divide both sides by 5.
$\frac{5a}{5}=\frac{15}{5}$
$a=3$

Published by
Pearson

ISBN 10:
0321825535

ISBN 13:
978-0-32182-553-7

$a=3$

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