3+12m-2=9m+21-7m

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Solution for 3+12m-2=9m+21-7m equation:


Simplifying
3 + 12m + -2 = 9m + 21 + -7m

Reorder the terms:
3 + -2 + 12m = 9m + 21 + -7m

Combine like terms: 3 + -2 = 1
1 + 12m = 9m + 21 + -7m

Reorder the terms:
1 + 12m = 21 + 9m + -7m

Combine like terms: 9m + -7m = 2m
1 + 12m = 21 + 2m

Solving
1 + 12m = 21 + 2m

Solving for variable 'm'.

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

Add '-2m' to each side of the equation.
1 + 12m + -2m = 21 + 2m + -2m

Combine like terms: 12m + -2m = 10m
1 + 10m = 21 + 2m + -2m

Combine like terms: 2m + -2m = 0
1 + 10m = 21 + 0
1 + 10m = 21

Add '-1' to each side of the equation.
1 + -1 + 10m = 21 + -1

Combine like terms: 1 + -1 = 0
0 + 10m = 21 + -1
10m = 21 + -1

Combine like terms: 21 + -1 = 20
10m = 20

Divide each side by '10'.
m = 2

Simplifying
m = 2

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