2a+6-3a=12

Solution for 2a+6-3a=12 equation:

Simplifying
2a + 6 + -3a = 12

Reorder the terms:
6 + 2a + -3a = 12

Combine like terms: 2a + -3a = -1a
6 + -1a = 12

Solving
6 + -1a = 12

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 = 12 + -6

Combine like terms: 6 + -6 = 0
0 + -1a = 12 + -6
-1a = 12 + -6

Combine like terms: 12 + -6 = 6
-1a = 6

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

Simplifying
a = -6