-12=7-7

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Solution for -12=7-7 equation: 


Simplifying
-12 = 7 + -7

Combine like terms: 7 + -7 = 0
-12 = 0

Solving
-12 = 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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