-20+-20=

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Solution for -20+-20= equation: 


Simplifying
-20 + -20 = 0

Combine like terms: -20 + -20 = -40
-40 = 0

Solving
-40 = 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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