n+n+(3+n)+(5+n)=35

Solution for n+n+(3+n)+(5+n)=35 equation:

Simplifying
n + n + (3 + n) + (5 + n) = 35

Remove parenthesis around (3 + n)
n + n + 3 + n + (5 + n) = 35

Remove parenthesis around (5 + n)
n + n + 3 + n + 5 + n = 35

Reorder the terms:
3 + 5 + n + n + n + n = 35

Combine like terms: 3 + 5 = 8
8 + n + n + n + n = 35

Combine like terms: n + n = 2n
8 + 2n + n + n = 35

Combine like terms: 2n + n = 3n
8 + 3n + n = 35

Combine like terms: 3n + n = 4n
8 + 4n = 35

Solving
8 + 4n = 35

Solving for variable 'n'.

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

Add '-8' to each side of the equation.
8 + -8 + 4n = 35 + -8

Combine like terms: 8 + -8 = 0
0 + 4n = 35 + -8
4n = 35 + -8

Combine like terms: 35 + -8 = 27
4n = 27

Divide each side by '4'.
n = 6.75

Simplifying
n = 6.75