-12=-2(3+3z)

Solution for -12=-2(3+3z) equation:

Simplifying
-12 = -2(3 + 3z)
-12 = (3 * -2 + 3z * -2)
-12 = (-6 + -6z)

Solving
-12 = -6 + -6z

Solving for variable 'z'.

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

Add '6z' to each side of the equation.
-12 + 6z = -6 + -6z + 6z

Combine like terms: -6z + 6z = 0
-12 + 6z = -6 + 0
-12 + 6z = -6

Add '12' to each side of the equation.
-12 + 12 + 6z = -6 + 12

Combine like terms: -12 + 12 = 0
0 + 6z = -6 + 12
6z = -6 + 12

Combine like terms: -6 + 12 = 6
6z = 6

Divide each side by '6'.
z = 1

Simplifying
z = 1