#### Answer

$\frac{15}{4}=3\frac{3}{4}$

#### Work Step by Step

$\frac{21a}{4}\div\frac{7a}{5}=\frac{21a}{4}\times\frac{5}{7a}
=\frac{3\times/\!\!7\times /\!\!a}{4}\times\frac{5}{/\!\!7\times /\!\!a}
=\frac{3\times5}{4}=\frac{15}{4}=3\frac{3}{4}$

Published by
Pearson

ISBN 10:
0321955048

ISBN 13:
978-0-32195-504-3

$\frac{15}{4}=3\frac{3}{4}$

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