12a+6-3-4a=

Solution for 12a+6-3-4a= equation:

Simplifying
12a + 6 + -3 + -4a = 0

Reorder the terms:
6 + -3 + 12a + -4a = 0

Combine like terms: 6 + -3 = 3
3 + 12a + -4a = 0

Combine like terms: 12a + -4a = 8a
3 + 8a = 0

Solving
3 + 8a = 0

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + 8a = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 8a = 0 + -3
8a = 0 + -3

Combine like terms: 0 + -3 = -3
8a = -3

Divide each side by '8'.
a = -0.375

Simplifying
a = -0.375