Answer
-4m
Work Step by Step
6m + 9n + (-9n) + (-10m)
= (6m + (-10m)) + (9n + (-9n))
= -4m + 0
= -4m
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 1 - Introduction to Algebraic Expressions - 1.5 Addition of Real Numbers - 1.5 Exercise Set - Page 43: 81
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