#### Answer

7

#### Work Step by Step

If $a$ is a number, then $-(-a)=a$.
Therefore, $-(-7)=7$.

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

7

If $a$ is a number, then $-(-a)=a$.
Therefore, $-(-7)=7$.

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