9-13=-31

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Solution for 9-13=-31 equation: 


Simplifying
9 + -13 = -31

Combine like terms: 9 + -13 = -4
-4 = -31

Solving
-4 = -31

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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