#### Answer

$a+b=57\\
a-b=55\\
a*b=56\\
a/b=56$

#### Work Step by Step

$56+1=57\\
56-1=55\\
56*1=56\\
56/1=56$

Published by
Pearson

ISBN 10:
0321955048

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

$a+b=57\\
a-b=55\\
a*b=56\\
a/b=56$

$56+1=57\\
56-1=55\\
56*1=56\\
56/1=56$

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