Answer
$-1$
Work Step by Step
$\frac{y-z}{z-y}$ Original Problem
$=\frac{y-z}{-1(-z+y)}$ Factor out a negative one from the denominator
$=\frac{y-z}{-1(y-z)}$ Swap terms in the denominator (Commutative Property).
$=-1$ Simplify
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 6 - Section 6.1 - Rational Functions and Multiplying and Dividing Rational Expressions - Vocabulary, Readiness & Video Check - Page 344: 6
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