4+-5=7

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Solution for 4+-5=7 equation: 


Simplifying
4 + -5 = 7

Combine like terms: 4 + -5 = -1
-1 = 7

Solving
-1 = 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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