3m+9m+12=21m+3

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Solution for 3m+9m+12=21m+3 equation:


Simplifying
3m + 9m + 12 = 21m + 3

Reorder the terms:
12 + 3m + 9m = 21m + 3

Combine like terms: 3m + 9m = 12m
12 + 12m = 21m + 3

Reorder the terms:
12 + 12m = 3 + 21m

Solving
12 + 12m = 3 + 21m

Solving for variable 'm'.

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

Add '-21m' to each side of the equation.
12 + 12m + -21m = 3 + 21m + -21m

Combine like terms: 12m + -21m = -9m
12 + -9m = 3 + 21m + -21m

Combine like terms: 21m + -21m = 0
12 + -9m = 3 + 0
12 + -9m = 3

Add '-12' to each side of the equation.
12 + -12 + -9m = 3 + -12

Combine like terms: 12 + -12 = 0
0 + -9m = 3 + -12
-9m = 3 + -12

Combine like terms: 3 + -12 = -9
-9m = -9

Divide each side by '-9'.
m = 1

Simplifying
m = 1

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