#### Answer

$-\frac{53}{42}$

#### Work Step by Step

LCD is 42.
$-\frac{5}{6}-\frac{3}{7}=-\frac{5\times7}{6\times7}-\frac{3\times6}{7\times6}=-\frac{35}{42}-\frac{18}{42}=\frac{-35-18}{42}=\frac{-53}{42}$

Published by
Pearson

ISBN 10:
0321955048

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

$-\frac{53}{42}$

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