3+3[3+3(3+3x)]=120

Solution for 3+3[3+3(3+3x)]=120 equation:

Simplifying
3 + 3[3 + 3(3 + 3x)] = 120
3 + 3[3 + (3 * 3 + 3x * 3)] = 120
3 + 3[3 + (9 + 9x)] = 120

Combine like terms: 3 + 9 = 12
3 + 3[12 + 9x] = 120
3 + [12 * 3 + 9x * 3] = 120
3 + [36 + 27x] = 120

Combine like terms: 3 + 36 = 39
39 + 27x = 120

Solving
39 + 27x = 120

Solving for variable 'x'.

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

Add '-39' to each side of the equation.
39 + -39 + 27x = 120 + -39

Combine like terms: 39 + -39 = 0
0 + 27x = 120 + -39
27x = 120 + -39

Combine like terms: 120 + -39 = 81
27x = 81

Divide each side by '27'.
x = 3

Simplifying
x = 3