-9+1=80

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Solution for -9+1=80 equation: 


Simplifying
-9 + 1 = 80

Combine like terms: -9 + 1 = -8
-8 = 80

Solving
-8 = 80

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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