-3n+6-n=-42

Solution for -3n+6-n=-42 equation:

Simplifying
-3n + 6 + -1n = -42

Reorder the terms:
6 + -3n + -1n = -42

Combine like terms: -3n + -1n = -4n
6 + -4n = -42

Solving
6 + -4n = -42

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 + -4n = -42 + -6

Combine like terms: 6 + -6 = 0
0 + -4n = -42 + -6
-4n = -42 + -6

Combine like terms: -42 + -6 = -48
-4n = -48

Divide each side by '-4'.
n = 12

Simplifying
n = 12