3m-6=6m-3m+21

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Solution for 3m-6=6m-3m+21 equation: 


Simplifying
3m + -6 = 6m + -3m + 21

Reorder the terms:
-6 + 3m = 6m + -3m + 21

Reorder the terms:
-6 + 3m = 21 + 6m + -3m

Combine like terms: 6m + -3m = 3m
-6 + 3m = 21 + 3m

Add '-3m' to each side of the equation.
-6 + 3m + -3m = 21 + 3m + -3m

Combine like terms: 3m + -3m = 0
-6 + 0 = 21 + 3m + -3m
-6 = 21 + 3m + -3m

Combine like terms: 3m + -3m = 0
-6 = 21 + 0
-6 = 21

Solving
-6 = 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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