9-6m=21

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Solution for 9-6m=21 equation: 


Simplifying
9 + -6m = 21

Solving
9 + -6m = 21

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-9' to each side of the equation.
9 + -9 + -6m = 21 + -9

Combine like terms: 9 + -9 = 0
0 + -6m = 21 + -9
-6m = 21 + -9

Combine like terms: 21 + -9 = 12
-6m = 12

Divide each side by '-6'.
m = -2

Simplifying
m = -2

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