2(n+1)+n=-4

Solution for 2(n+1)+n=-4 equation:

Simplifying
2(n + 1) + n = -4

Reorder the terms:
2(1 + n) + n = -4
(1 * 2 + n * 2) + n = -4
(2 + 2n) + n = -4

Combine like terms: 2n + n = 3n
2 + 3n = -4

Solving
2 + 3n = -4

Solving for variable 'n'.

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

Add '-2' to each side of the equation.
2 + -2 + 3n = -4 + -2

Combine like terms: 2 + -2 = 0
0 + 3n = -4 + -2
3n = -4 + -2

Combine like terms: -4 + -2 = -6
3n = -6

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

Simplifying
n = -2