How do you evaluate 82+(−57)?

1 Answer
Tony B
Dec 20, 2016

82−57

Explanation:

Think of this as 82+1(−57)

Multiply everything inside the brackets by +1
When you multiply or divide, if the signs are different then the answer is negative. On the other hand, if both signs are the same then the answer is positive.

(+1)×(−57)=−57 ← the signs are different

giving:

82−57

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