-6+21=12-15

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Solution for -6+21=12-15 equation: 


Simplifying
-6 + 21 = 12 + -15

Combine like terms: -6 + 21 = 15
15 = 12 + -15

Combine like terms: 12 + -15 = -3
15 = -3

Solving
15 = -3

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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