3x+3(x+2)=42

Solution for 3x+3(x+2)=42 equation:

Simplifying
3x + 3(x + 2) = 42

Reorder the terms:
3x + 3(2 + x) = 42
3x + (2 * 3 + x * 3) = 42
3x + (6 + 3x) = 42

Reorder the terms:
6 + 3x + 3x = 42

Combine like terms: 3x + 3x = 6x
6 + 6x = 42

Solving
6 + 6x = 42

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 6x = 42 + -6

Combine like terms: 6 + -6 = 0
0 + 6x = 42 + -6
6x = 42 + -6

Combine like terms: 42 + -6 = 36
6x = 36

Divide each side by '6'.
x = 6

Simplifying
x = 6