(9n+(-1))-(7n+5)=

Solution for (9n+(-1))-(7n+5)= equation:

Simplifying
(9n + (-1)) + -1(7n + 5) = 0
(9n + -1) + -1(7n + 5) = 0

Reorder the terms:
(-1 + 9n) + -1(7n + 5) = 0

Remove parenthesis around (-1 + 9n)
-1 + 9n + -1(7n + 5) = 0

Reorder the terms:
-1 + 9n + -1(5 + 7n) = 0
-1 + 9n + (5 * -1 + 7n * -1) = 0
-1 + 9n + (-5 + -7n) = 0

Reorder the terms:
-1 + -5 + 9n + -7n = 0

Combine like terms: -1 + -5 = -6
-6 + 9n + -7n = 0

Combine like terms: 9n + -7n = 2n
-6 + 2n = 0

Solving
-6 + 2n = 0

Solving for variable 'n'.

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

Add '6' to each side of the equation.
-6 + 6 + 2n = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 2n = 0 + 6
2n = 0 + 6

Combine like terms: 0 + 6 = 6
2n = 6

Divide each side by '2'.
n = 3

Simplifying
n = 3