Answer
$r=4$
Work Step by Step
We are given the equation $48=12r$. In order to solve, we must divide both sides by 12.
$\frac{48}{12}=4=\frac{12\times r}{12}$
Therefore, $r=4$.
Basic College Mathematics (10th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0134467795
ISBN 13:
978-0-13446-779-5
Chapter 9 - Basic Algebra - 9.6 Solving Equations - 9.6 Exercises - Page 670: 43
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