-20-(-40)=

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Solution for -20-(-40)= equation: 


Simplifying
-20 + -1(-40) = 0

Multiply -1 * -40
-20 + 40 = 0

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

Solving
20 = 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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