7n+2(2(1-n)-2(1+n))=14

Solution for 7n+2(2(1-n)-2(1+n))=14 equation:

Simplifying
7n + 2(2(1 + -1n) + -2(1 + n)) = 14
7n + 2((1 * 2 + -1n * 2) + -2(1 + n)) = 14
7n + 2((2 + -2n) + -2(1 + n)) = 14
7n + 2(2 + -2n + (1 * -2 + n * -2)) = 14
7n + 2(2 + -2n + (-2 + -2n)) = 14

Reorder the terms:
7n + 2(2 + -2 + -2n + -2n) = 14

Combine like terms: 2 + -2 = 0
7n + 2(0 + -2n + -2n) = 14
7n + 2(-2n + -2n) = 14

Combine like terms: -2n + -2n = -4n
7n + 2(-4n) = 14

Remove parenthesis around (-4n)
7n + 2 * -4n = 14

Multiply 2 * -4
7n + -8n = 14

Combine like terms: 7n + -8n = -1n
-1n = 14

Solving
-1n = 14

Solving for variable 'n'.

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

Divide each side by '-1'.
n = -14

Simplifying
n = -14