18+5a-12-6a=

Solution for 18+5a-12-6a= equation:

Simplifying
18 + 5a + -12 + -6a = 0

Reorder the terms:
18 + -12 + 5a + -6a = 0

Combine like terms: 18 + -12 = 6
6 + 5a + -6a = 0

Combine like terms: 5a + -6a = -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