-2(3+3a)=-2(1+a)-4

Solution for -2(3+3a)=-2(1+a)-4 equation:

Simplifying
-2(3 + 3a) = -2(1 + a) + -4
(3 * -2 + 3a * -2) = -2(1 + a) + -4
(-6 + -6a) = -2(1 + a) + -4
-6 + -6a = (1 * -2 + a * -2) + -4
-6 + -6a = (-2 + -2a) + -4

Reorder the terms:
-6 + -6a = -2 + -4 + -2a

Combine like terms: -2 + -4 = -6
-6 + -6a = -6 + -2a

Add '6' to each side of the equation.
-6 + 6 + -6a = -6 + 6 + -2a

Combine like terms: -6 + 6 = 0
0 + -6a = -6 + 6 + -2a
-6a = -6 + 6 + -2a

Combine like terms: -6 + 6 = 0
-6a = 0 + -2a
-6a = -2a

Solving
-6a = -2a

Solving for variable 'a'.

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

Add '2a' to each side of the equation.
-6a + 2a = -2a + 2a

Combine like terms: -6a + 2a = -4a
-4a = -2a + 2a

Combine like terms: -2a + 2a = 0
-4a = 0

Divide each side by '-4'.
a = 0

Simplifying
a = 0