n=3-(n+6)

Solution for n=3-(n+6) equation:

Simplifying
n = 3 + -1(n + 6)

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

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

Solving
n = -3 + -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.
n + n = -3 + -1n + n

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

Combine like terms: -1n + n = 0
2n = -3 + 0
2n = -3

Divide each side by '2'.
n = -1.5

Simplifying
n = -1.5