8-4+9-12=

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Solution for 8-4+9-12= equation: 


Simplifying
8 + -4 + 9 + -12 = 0

Combine like terms: 8 + -4 = 4
4 + 9 + -12 = 0

Combine like terms: 4 + 9 = 13
13 + -12 = 0

Combine like terms: 13 + -12 = 1
1 = 0

Solving
1 = 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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