42=2(x+x+3)

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

Simplifying
42 = 2(x + x + 3)

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

Combine like terms: x + x = 2x
42 = 2(3 + 2x)
42 = (3 * 2 + 2x * 2)
42 = (6 + 4x)

Solving
42 = 6 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
42 + -4x = 6 + 4x + -4x

Combine like terms: 4x + -4x = 0
42 + -4x = 6 + 0
42 + -4x = 6

Add '-42' to each side of the equation.
42 + -42 + -4x = 6 + -42

Combine like terms: 42 + -42 = 0
0 + -4x = 6 + -42
-4x = 6 + -42

Combine like terms: 6 + -42 = -36
-4x = -36

Divide each side by '-4'.
x = 9

Simplifying
x = 9