Evaluate
31
Factor
31
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1-15+25+4\times 5
Divide 2 by 2 to get 1.
-14+25+4\times 5
Subtract 15 from 1 to get -14.
11+4\times 5
Add -14 and 25 to get 11.
11+20
Multiply 4 and 5 to get 20.
31
Add 11 and 20 to get 31.
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