Prealgebra (7th Edition)

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

Chapter 5 - Section 5.5 - Fractions, Decimals, and Order of Operations - Exercise Set - Page 383: 90



Work Step by Step

If we want to add fractions, we have to find a common denominator. Here, this can be 22. This is the lowest common denominator, it is the multiple of both 11 and 22. $\frac{4}{11}-\frac{19}{22}=\frac{2\times4}{2\times11}-\frac{19}{22}=\frac{8}{22}-\frac{19}{22}=\frac{-11}{22}=-\frac{1}{2}=-0.5$
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