7n-6(n-1)=18

Solution for 7n-6(n-1)=18 equation:

Simplifying
7n + -6(n + -1) = 18

Reorder the terms:
7n + -6(-1 + n) = 18
7n + (-1 * -6 + n * -6) = 18
7n + (6 + -6n) = 18

Reorder the terms:
6 + 7n + -6n = 18

Combine like terms: 7n + -6n = 1n
6 + 1n = 18

Solving
6 + 1n = 18

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 + 1n = 18 + -6

Combine like terms: 6 + -6 = 0
0 + 1n = 18 + -6
1n = 18 + -6

Combine like terms: 18 + -6 = 12
1n = 12

Divide each side by '1'.
n = 12

Simplifying
n = 12