Answer
$\frac{3}{10}$
Work Step by Step
$\frac{9}{10}+(-\frac{3}{5})=\frac{9}{10}+(-\frac{3\times2}{5\times2})=\frac{9}{10}+(-\frac{6}{10})=\frac{9}{10}-\frac{6}{10}=\frac{9-6}{10}=\frac{3}{10}$
Basic College Mathematics (10th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0134467795
ISBN 13:
978-0-13446-779-5
Chapter 9 - Basic Algebra - Review Exercises - Page 695: 19
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