Answer
$M = \dfrac{12}{r}$
Work Step by Step
Multiply M to both sides of the equation to obtain:
$M \cdot r = \dfrac{12}{M} \cdot M
\\Mr = 12$
Divide $r$ to both sides of the equation to obtain:
$M = \dfrac{12}{r}$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter P, Prerequisites - Section P.8 - Solving Basic Equations - P.8 Exercises - Page 60: 87
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