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 - Page 272: 13



Work Step by Step

LCD is 36. $\frac{5}{12}-\frac{1}{9}=\frac{5\times3}{12\times3}-\frac{1\times4}{9\times4}=\frac{15}{36}-\frac{4}{36}=\frac{15-4}{36}=\frac{11}{36}$
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