-4-(-13)=

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Solution for -4-(-13)= equation: 


Simplifying
-4 + -1(-13) = 0

Multiply -1 * -13
-4 + 13 = 0

Combine like terms: -4 + 13 = 9
9 = 0

Solving
9 = 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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