15-21=-111

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Solution for 15-21=-111 equation: 


Simplifying
15 + -21 = -111

Combine like terms: 15 + -21 = -6
-6 = -111

Solving
-6 = -111

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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