2(n+3)+5n=20

Solution for 2(n+3)+5n=20 equation:

Simplifying
2(n + 3) + 5n = 20

Reorder the terms:
2(3 + n) + 5n = 20
(3 * 2 + n * 2) + 5n = 20
(6 + 2n) + 5n = 20

Combine like terms: 2n + 5n = 7n
6 + 7n = 20

Solving
6 + 7n = 20

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 + 7n = 20 + -6

Combine like terms: 6 + -6 = 0
0 + 7n = 20 + -6
7n = 20 + -6

Combine like terms: 20 + -6 = 14
7n = 14

Divide each side by '7'.
n = 2

Simplifying
n = 2