3-3[2-(4-a)]=

Solution for 3-3[2-(4-a)]= equation:

Simplifying
3 + -3[2 + -1(4 + -1a)] = 0
3 + -3[2 + (4 * -1 + -1a * -1)] = 0
3 + -3[2 + (-4 + 1a)] = 0

Combine like terms: 2 + -4 = -2
3 + -3[-2 + 1a] = 0
3 + [-2 * -3 + 1a * -3] = 0
3 + [6 + -3a] = 0

Combine like terms: 3 + 6 = 9
9 + -3a = 0

Solving
9 + -3a = 0

Solving for variable 'a'.

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

Add '-9' to each side of the equation.
9 + -9 + -3a = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -3a = 0 + -9
-3a = 0 + -9

Combine like terms: 0 + -9 = -9
-3a = -9

Divide each side by '-3'.
a = 3

Simplifying
a = 3