-(1-5n)-7n=0

Solution for -(1-5n)-7n=0 equation:

Simplifying
-1(1 + -5n) + -7n = 0
(1 * -1 + -5n * -1) + -7n = 0
(-1 + 5n) + -7n = 0

Combine like terms: 5n + -7n = -2n
-1 + -2n = 0

Solving
-1 + -2n = 0

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 + -2n = 0 + 1

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

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

Divide each side by '-2'.
n = -0.5

Simplifying
n = -0.5