18m+12=9m+21

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Solution for 18m+12=9m+21 equation:


Simplifying
18m + 12 = 9m + 21

Reorder the terms:
12 + 18m = 9m + 21

Reorder the terms:
12 + 18m = 21 + 9m

Solving
12 + 18m = 21 + 9m

Solving for variable 'm'.

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

Add '-9m' to each side of the equation.
12 + 18m + -9m = 21 + 9m + -9m

Combine like terms: 18m + -9m = 9m
12 + 9m = 21 + 9m + -9m

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

Add '-12' to each side of the equation.
12 + -12 + 9m = 21 + -12

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

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

Divide each side by '9'.
m = 1

Simplifying
m = 1

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