9-12-4=

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Solution for 9-12-4= equation: 


Simplifying
9 + -12 + -4 = 0

Combine like terms: 9 + -12 = -3
-3 + -4 = 0

Combine like terms: -3 + -4 = -7
-7 = 0

Solving
-7 = 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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