Answer
-8 is a solution
Work Step by Step
$-9f=64-f$ $\longrightarrow$ substitute -8 for f
$(-9)(-8)=64-(-8)$ $\longrightarrow$ simplify
$72=72\checkmark$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 2 - Section 2.6 - Solving Equations: The Addition and Multiplication Properties - Exercise Set - Page 148: 5
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