m-12=21

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Solution for m-12=21 equation: 


Simplifying
m + -12 = 21

Reorder the terms:
-12 + m = 21

Solving
-12 + m = 21

Solving for variable 'm'.

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

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

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

Combine like terms: 21 + 12 = 33
m = 33

Simplifying
m = 33

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