Answer
$r=3$
Work Step by Step
Given:$\dfrac{r+1-2}{r-1}=\dfrac{r}{3}$
Apply cross products.
$3(r+1-2)=r(r-1)$
$3(r-1)=r(r-1)r$
From both side the term $(r-1)$ will cancel out.
Hence, $r=3$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 11 - Rational Expressions and Functions - 11-5 Solving Rational Equations - Practice and Problem-Solving Exercises - Page 684: 34
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