3-4+9=7

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Solution for 3-4+9=7 equation: 


Simplifying
3 + -4 + 9 = 7

Combine like terms: 3 + -4 = -1
-1 + 9 = 7

Combine like terms: -1 + 9 = 8
8 = 7

Solving
8 = 7

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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