Basic College Mathematics (10th Edition)

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

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, $r=6$.
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