Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 4 - Section 4.5 - Adding and Subtracting Unlike Fractions - Practice - Page 266: 1



Work Step by Step

$\frac{2}{7}+\frac{8}{21}$ $=\frac{2\times3}{7\times3}+\frac{8\times1}{21\times1}$ $=\frac{6}{21}+\frac{8}{21}$ $=\frac{14}{21}$ $=\frac{2}{3}$
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