7+8-9=4

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Solution for 7+8-9=4 equation: 


Simplifying
7 + 8 + -9 = 4

Combine like terms: 7 + 8 = 15
15 + -9 = 4

Combine like terms: 15 + -9 = 6
6 = 4

Solving
6 = 4

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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