-20+9+9=

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Solution for -20+9+9= equation: 


Simplifying
-20 + 9 + 9 = 0

Combine like terms: -20 + 9 = -11
-11 + 9 = 0

Combine like terms: -11 + 9 = -2
-2 = 0

Solving
-2 = 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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