x+x+(x+6)=120

Solution for x+x+(x+6)=120 equation:

Simplifying
x + x + (x + 6) = 120

Reorder the terms:
x + x + (6 + x) = 120

Remove parenthesis around (6 + x)
x + x + 6 + x = 120

Reorder the terms:
6 + x + x + x = 120

Combine like terms: x + x = 2x
6 + 2x + x = 120

Combine like terms: 2x + x = 3x
6 + 3x = 120

Solving
6 + 3x = 120

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 3x = 120 + -6

Combine like terms: 6 + -6 = 0
0 + 3x = 120 + -6
3x = 120 + -6

Combine like terms: 120 + -6 = 114
3x = 114

Divide each side by '3'.
x = 38

Simplifying
x = 38