9m-12=m+20

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Solution for 9m-12=m+20 equation:


Simplifying
9m + -12 = m + 20

Reorder the terms:
-12 + 9m = m + 20

Reorder the terms:
-12 + 9m = 20 + m

Solving
-12 + 9m = 20 + m

Solving for variable 'm'.

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

Add '-1m' to each side of the equation.
-12 + 9m + -1m = 20 + m + -1m

Combine like terms: 9m + -1m = 8m
-12 + 8m = 20 + m + -1m

Combine like terms: m + -1m = 0
-12 + 8m = 20 + 0
-12 + 8m = 20

Add '12' to each side of the equation.
-12 + 12 + 8m = 20 + 12

Combine like terms: -12 + 12 = 0
0 + 8m = 20 + 12
8m = 20 + 12

Combine like terms: 20 + 12 = 32
8m = 32

Divide each side by '8'.
m = 4

Simplifying
m = 4

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