Answer
$-6a-7$
Work Step by Step
Sum the coefficients of the terms containing the variable a.
$8a+a-7-15a=9a-7-15a=-6a-7$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 3 - Review - Page 203: 3
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