#### Answer

$\frac{3}{10}$

#### Work Step by Step

The least common denominator is 10. Convert to like fractions and subtract.
$\frac{7}{10}-\frac{2}{5}$
=$\frac{7}{10}-\frac{2\times2}{5\times2}$
=$\frac{7}{10}-\frac{4}{10}$
=$\frac{3}{10}$

Published by
Pearson

ISBN 10:
0321955048

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

$\frac{3}{10}$

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