Prealgebra (7th Edition)

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

Chapter 4 - Section 4.4 - Adding and Subtracting Like Fractions, Least Common Denominator, and Equivalent Fractions - Exercise Set - Page 263: 55


LCD is 72.

Work Step by Step

To find the least common denominator factor each denominator then multiply each factor the greatest number of times it occurs in either number. $36=2\times2\times\underline3\times\underline3$ $24=\underline2\times\underline2\times\underline2\times3$ $LCD=2\times2\times2\times3\times3=4\times6\times3=24\times3=72$
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