-13+14=21

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Solution for -13+14=21 equation: 


Simplifying
-13 + 14 = 21

Combine like terms: -13 + 14 = 1
1 = 21

Solving
1 = 21

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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