2(x+3)+x=15

Solution for 2(x+3)+x=15 equation:

Simplifying
2(x + 3) + x = 15

Reorder the terms:
2(3 + x) + x = 15
(3 * 2 + x * 2) + x = 15
(6 + 2x) + x = 15

Combine like terms: 2x + x = 3x
6 + 3x = 15

Solving
6 + 3x = 15

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 = 15 + -6

Combine like terms: 6 + -6 = 0
0 + 3x = 15 + -6
3x = 15 + -6

Combine like terms: 15 + -6 = 9
3x = 9

Divide each side by '3'.
x = 3

Simplifying
x = 3