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 273: 29



Work Step by Step

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