12+3m=6m-15-3m

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Solution for 12+3m=6m-15-3m equation: 


Simplifying
12 + 3m = 6m + -15 + -3m

Reorder the terms:
12 + 3m = -15 + 6m + -3m

Combine like terms: 6m + -3m = 3m
12 + 3m = -15 + 3m

Add '-3m' to each side of the equation.
12 + 3m + -3m = -15 + 3m + -3m

Combine like terms: 3m + -3m = 0
12 + 0 = -15 + 3m + -3m
12 = -15 + 3m + -3m

Combine like terms: 3m + -3m = 0
12 = -15 + 0
12 = -15

Solving
12 = -15

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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