Answer
1080
Work Step by Step
$-\frac{3}{40}$ and $\frac{11}{108}$
The LCD is 1080 because is the smallest positive number divisible both by 40 and 108
Prealgebra (7th Edition)
by Martin-Gay, Elayn
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 - Practice - Page 256: 14
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