-12=3+9

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Solution for -12=3+9 equation: 


Simplifying
-12 = 3 + 9

Combine like terms: 3 + 9 = 12
-12 = 12

Solving
-12 = 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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