Answer
$-\frac{1}{2}$
Work Step by Step
$\frac{5k-10}{20-10k}=\frac{5(k-2)}{10(2-k)}=\frac{5(k-2)}{-10(k-2)}=-\frac{5}{10}\times\frac{k-2}{k-2}=-\frac{1}{2}\times1=-\frac{1}{2}$
Intermediate Algebra (12th Edition)
by Lial, Margaret L.; Hornsby, John; McGinnis, Terry
Published by
Pearson
ISBN 10:
0321969359
ISBN 13:
978-0-32196-935-4
Chapter 6 - Section 6.1 - Rational Expressions and Functions; Multiplying and Dividing - 6.1 Exercises - Page 375: 61
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