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 - Exercise Set: 34



Work Step by Step

LCD is 130. $\frac{10}{13}-\frac{7}{10}=\frac{10\times10}{13\times19}-\frac{7\times13}{10\times13}=\frac{100}{130}-\frac{91}{130}=\frac{100-91}{130}=\frac{9}{130}$
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