2(a+3)-a=0

Solution for 2(a+3)-a=0 equation:

Simplifying
2(a + 3) + -1a = 0

Reorder the terms:
2(3 + a) + -1a = 0
(3 * 2 + a * 2) + -1a = 0
(6 + 2a) + -1a = 0

Combine like terms: 2a + -1a = 1a
6 + 1a = 0

Solving
6 + 1a = 0

Solving for variable 'a'.

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

Add '-6' to each side of the equation.
6 + -6 + 1a = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 1a = 0 + -6
1a = 0 + -6

Combine like terms: 0 + -6 = -6
1a = -6

Divide each side by '1'.
a = -6

Simplifying
a = -6