#### Answer

$\frac{9}{10}$

#### Work Step by Step

-$\frac{9}{100}$ + $\frac{99}{100}$
= $\frac{-9+99}{100}$
=$\frac{90}{100}$
=$\frac{9\times10}{10\times10}$
=$\frac{9}{10}$

Published by
Pearson

ISBN 10:
0321955048

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

$\frac{9}{10}$

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