n=3-(n+3)

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

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

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

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

Solving
n = -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 = -1n + n

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

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

Divide each side by '2'.
n = 0

Simplifying
n = 0