n+6+n=-12-n

Solution for n+6+n=-12-n equation:

Simplifying
n + 6 + n = -12 + -1n

Reorder the terms:
6 + n + n = -12 + -1n

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

Solving
6 + 2n = -12 + -1n

Solving for variable 'n'.

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

Add 'n' to each side of the equation.
6 + 2n + n = -12 + -1n + n

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

Combine like terms: -1n + n = 0
6 + 3n = -12 + 0
6 + 3n = -12

Add '-6' to each side of the equation.
6 + -6 + 3n = -12 + -6

Combine like terms: 6 + -6 = 0
0 + 3n = -12 + -6
3n = -12 + -6

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

Divide each side by '3'.
n = -6

Simplifying
n = -6