8-9-(-n)=1

Solution for 8-9-(-n)=1 equation:

Simplifying
8 + -9 + -1(-1n) = 1

Remove parenthesis around (-1n)
8 + -9 + -1 * -1n = 1

Multiply -1 * -1
8 + -9 + 1n = 1

Combine like terms: 8 + -9 = -1
-1 + 1n = 1

Solving
-1 + 1n = 1

Solving for variable 'n'.

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

Add '1' to each side of the equation.
-1 + 1 + 1n = 1 + 1

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

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

Divide each side by '1'.
n = 2

Simplifying
n = 2