Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 1 - Introduction to Algebraic Expressions - 1.3 Fraction Notation - 1.3 Exercise Set - Page 27: 74

Answer

$\frac{10}{21}$

Work Step by Step

$\frac{5}{7}-\frac{5}{21}=\frac{5\times3}{7\times3}-\frac{5}{21}=\frac{15}{21}-\frac{5}{21}=\frac{15-5}{21}=\frac{10}{21}$
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