3+12-9=

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Solution for 3+12-9= equation: 


Simplifying
3 + 12 + -9 = 0

Combine like terms: 3 + 12 = 15
15 + -9 = 0

Combine like terms: 15 + -9 = 6
6 = 0

Solving
6 = 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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