Evaluate
91
Factor
7\times 13
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88+12+47+5-2-38+57-78
Add 6 and 82 to get 88.
100+47+5-2-38+57-78
Add 88 and 12 to get 100.
147+5-2-38+57-78
Add 100 and 47 to get 147.
152-2-38+57-78
Add 147 and 5 to get 152.
150-38+57-78
Subtract 2 from 152 to get 150.
112+57-78
Subtract 38 from 150 to get 112.
169-78
Add 112 and 57 to get 169.
91
Subtract 78 from 169 to get 91.
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