-13=(-7)-7

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Solution for -13=(-7)-7 equation: 


Simplifying
-13 = (-7) + -7
-13 = -7 + -7

Combine like terms: -7 + -7 = -14
-13 = -14

Solving
-13 = -14

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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