-13-(-9)=

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Solution for -13-(-9)= equation: 


Simplifying
-13 + -1(-9) = 0

Multiply -1 * -9
-13 + 9 = 0

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

Solving
-4 = 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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