-12+7-9=

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Solution for -12+7-9= equation: 


Simplifying
-12 + 7 + -9 = 0

Combine like terms: -12 + 7 = -5
-5 + -9 = 0

Combine like terms: -5 + -9 = -14
-14 = 0

Solving
-14 = 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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