2(n+2n)-6=30

Solution for 2(n+2n)-6=30 equation:

Simplifying
2(n + 2n) + -6 = 30

Combine like terms: n + 2n = 3n
2(3n) + -6 = 30

Remove parenthesis around (3n)
2 * 3n + -6 = 30

Multiply 2 * 3
6n + -6 = 30

Reorder the terms:
-6 + 6n = 30

Solving
-6 + 6n = 30

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 + 6n = 30 + 6

Combine like terms: -6 + 6 = 0
0 + 6n = 30 + 6
6n = 30 + 6

Combine like terms: 30 + 6 = 36
6n = 36

Divide each side by '6'.
n = 6

Simplifying
n = 6