-6(-5a-4)-3(a-6)=42

Solution for -6(-5a-4)-3(a-6)=42 equation:

Simplifying
-6(-5a + -4) + -3(a + -6) = 42

Reorder the terms:
-6(-4 + -5a) + -3(a + -6) = 42
(-4 * -6 + -5a * -6) + -3(a + -6) = 42
(24 + 30a) + -3(a + -6) = 42

Reorder the terms:
24 + 30a + -3(-6 + a) = 42
24 + 30a + (-6 * -3 + a * -3) = 42
24 + 30a + (18 + -3a) = 42

Reorder the terms:
24 + 18 + 30a + -3a = 42

Combine like terms: 24 + 18 = 42
42 + 30a + -3a = 42

Combine like terms: 30a + -3a = 27a
42 + 27a = 42

Add '-42' to each side of the equation.
42 + -42 + 27a = 42 + -42

Combine like terms: 42 + -42 = 0
0 + 27a = 42 + -42
27a = 42 + -42

Combine like terms: 42 + -42 = 0
27a = 0

Solving
27a = 0

Solving for variable 'a'.

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

Divide each side by '27'.
a = 0

Simplifying
a = 0