18-3n=12

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Solution for 18-3n=12 equation: 


Simplifying
18 + -3n = 12

Solving
18 + -3n = 12

Solving for variable 'n'.

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

Add '-18' to each side of the equation.
18 + -18 + -3n = 12 + -18

Combine like terms: 18 + -18 = 0
0 + -3n = 12 + -18
-3n = 12 + -18

Combine like terms: 12 + -18 = -6
-3n = -6

Divide each side by '-3'.
n = 2

Simplifying
n = 2

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