Answer
$\frac{89a}{99}$
Work Step by Step
LCD is 99.
$\frac{5a}{11}+\frac{4a}{9}=\frac{5a\times9}{11\times9}+\frac{4a\times11}{9\times11}=\frac{45a}{99}+\frac{44a}{99}=\frac{45a+44a}{99}=\frac{89a}{99}$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
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: 17
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