-90+9=

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Solution for -90+9= equation: 


Simplifying
-90 + 9 = 0

Combine like terms: -90 + 9 = -81
-81 = 0

Solving
-81 = 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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