x+2(4x-1)+18=42

Solution for x+2(4x-1)+18=42 equation:

Simplifying
x + 2(4x + -1) + 18 = 42

Reorder the terms:
x + 2(-1 + 4x) + 18 = 42
x + (-1 * 2 + 4x * 2) + 18 = 42
x + (-2 + 8x) + 18 = 42

Reorder the terms:
-2 + 18 + x + 8x = 42

Combine like terms: -2 + 18 = 16
16 + x + 8x = 42

Combine like terms: x + 8x = 9x
16 + 9x = 42

Solving
16 + 9x = 42

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + 9x = 42 + -16

Combine like terms: 16 + -16 = 0
0 + 9x = 42 + -16
9x = 42 + -16

Combine like terms: 42 + -16 = 26
9x = 26

Divide each side by '9'.
x = 2.888888889

Simplifying
x = 2.888888889