2(x+X+3)=42

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

Simplifying
2(x + X + 3) = 42

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

Solving
6 + 2X + 2x = 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 + 2X + -6 + 2x = 42 + -6

Reorder the terms:
6 + -6 + 2X + 2x = 42 + -6

Combine like terms: 6 + -6 = 0
0 + 2X + 2x = 42 + -6
2X + 2x = 42 + -6

Combine like terms: 42 + -6 = 36
2X + 2x = 36

Add '-2x' to each side of the equation.
2X + 2x + -2x = 36 + -2x

Combine like terms: 2x + -2x = 0
2X + 0 = 36 + -2x
2X = 36 + -2x

Divide each side by '2'.
X = 18 + -1x

Simplifying
X = 18 + -1x