Evaluate
-23
Factor
-23
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1+5+7-18\times 2
Add -3 and 4 to get 1.
6+7-18\times 2
Add 1 and 5 to get 6.
13-18\times 2
Add 6 and 7 to get 13.
13-36
Multiply 18 and 2 to get 36.
-23
Subtract 36 from 13 to get -23.
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