Answer
$r=6$
Work Step by Step
We are given the equation $-54=-9r$. In order to solve, we must divide both sides by -9.
$\frac{-54}{-9}=6=\frac{-9\times r}{-9}$
Therefore, $r=6$.
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: 50
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