2n+n+(1+n)=16

Solution for 2n+n+(1+n)=16 equation:

Simplifying
2n + n + (1 + n) = 16

Remove parenthesis around (1 + n)
2n + n + 1 + n = 16

Reorder the terms:
1 + 2n + n + n = 16

Combine like terms: 2n + n = 3n
1 + 3n + n = 16

Combine like terms: 3n + n = 4n
1 + 4n = 16

Solving
1 + 4n = 16

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 + 4n = 16 + -1

Combine like terms: 1 + -1 = 0
0 + 4n = 16 + -1
4n = 16 + -1

Combine like terms: 16 + -1 = 15
4n = 15

Divide each side by '4'.
n = 3.75

Simplifying
n = 3.75