3(n-2)-n=12

Solution for 3(n-2)-n=12 equation:

Simplifying
3(n + -2) + -1n = 12

Reorder the terms:
3(-2 + n) + -1n = 12
(-2 * 3 + n * 3) + -1n = 12
(-6 + 3n) + -1n = 12

Combine like terms: 3n + -1n = 2n
-6 + 2n = 12

Solving
-6 + 2n = 12

Solving for variable 'n'.

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

Add '6' to each side of the equation.
-6 + 6 + 2n = 12 + 6

Combine like terms: -6 + 6 = 0
0 + 2n = 12 + 6
2n = 12 + 6

Combine like terms: 12 + 6 = 18
2n = 18

Divide each side by '2'.
n = 9

Simplifying
n = 9