#### Answer

$-6a-7$

#### Work Step by Step

Sum the coefficients of the terms containing the variable a.
$8a+a-7-15a=9a-7-15a=-6a-7$

Published by
Pearson

ISBN 10:
0321955048

ISBN 13:
978-0-32195-504-3

$-6a-7$

Sum the coefficients of the terms containing the variable a.
$8a+a-7-15a=9a-7-15a=-6a-7$

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