-20-(-20)=

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


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

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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