(-7)-(-20)=

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Solution for (-7)-(-20)= equation: 


Simplifying
(-7) + -1(-20) = 0
-7 + -1(-20) = 0

Multiply -1 * -20
-7 + 20 = 0

Combine like terms: -7 + 20 = 13
13 = 0

Solving
13 = 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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