Answer
$r=-36$
Work Step by Step
We are given the equation $\frac{r}{3}=-12$. First, we must rewrite the left side as $\frac{1}{3}r$. Next, multiply both sides by 3.
$(\frac{1}{3}r\times3)=r=-12\times3=-36$
Therefore, $r=-36$.
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 9 - Basic Algebra - 9.6 Solving Equations - 9.6 Exercises - Page 672: 61
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