Answer
$\frac{8}{7}$
Work Step by Step
$\frac{31}{21}-\frac{7}{21}=\frac{31-7}{21}=\frac{24}{21}=\frac{24\div3}{21\div3}=\frac{8}{7}$
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 3 - Adding and Subtracting Fractions - 3.1 Adding and Subtracting Like Fractions - 3.1 Execises - Page 201: 25
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