7n-(9n+1)=5

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

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

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

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

Combine like terms: 7n + -9n = -2n
-1 + -2n = 5

Solving
-1 + -2n = 5

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 = 5 + 1

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

Combine like terms: 5 + 1 = 6
-2n = 6

Divide each side by '-2'.
n = -3

Simplifying
n = -3