Answer
$-\frac{53}{42}$
Work Step by Step
LCD is 42.
$-\frac{5}{6}-\frac{3}{7}=-\frac{5\times7}{6\times7}-\frac{3\times6}{7\times6}=-\frac{35}{42}-\frac{18}{42}=\frac{-35-18}{42}=\frac{-53}{42}$
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: 43
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