-3=5+7

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Solution for -3=5+7 equation: 


Simplifying
-3 = 5 + 7

Combine like terms: 5 + 7 = 12
-3 = 12

Solving
-3 = 12

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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