4(a-6)-a=42.3

Solution for 4(a-6)-a=42.3 equation:

Simplifying
4(a + -6) + -1a = 42.3

Reorder the terms:
4(-6 + a) + -1a = 42.3
(-6 * 4 + a * 4) + -1a = 42.3
(-24 + 4a) + -1a = 42.3

Combine like terms: 4a + -1a = 3a
-24 + 3a = 42.3

Solving
-24 + 3a = 42.3

Solving for variable 'a'.

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

Add '24' to each side of the equation.
-24 + 24 + 3a = 42.3 + 24

Combine like terms: -24 + 24 = 0
0 + 3a = 42.3 + 24
3a = 42.3 + 24

Combine like terms: 42.3 + 24 = 66.3
3a = 66.3

Divide each side by '3'.
a = 22.1

Simplifying
a = 22.1