6=-3+n+2n

Solution for 6=-3+n+2n equation:

Simplifying
6 = -3 + n + 2n

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

Solving
6 = -3 + 3n

Solving for variable 'n'.

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

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

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

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

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

Combine like terms: -3 + -6 = -9
-3n = -9

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

Simplifying
n = 3