Answer
-5z
Work Step by Step
$10z-15z=z(10-15)=z(-5)=z\times-5=-5z$
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 9 - Basic Algebra - Review Exercises - Page 700: 92
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