-27-(-31)=

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Solution for -27-(-31)= equation: 


Simplifying
-27 + -1(-31) = 0

Multiply -1 * -31
-27 + 31 = 0

Combine like terms: -27 + 31 = 4
4 = 0

Solving
4 = 0

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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