3x-6+x+8=42

Solution for 3x-6+x+8=42 equation:

Simplifying
3x + -6 + x + 8 = 42

Reorder the terms:
-6 + 8 + 3x + x = 42

Combine like terms: -6 + 8 = 2
2 + 3x + x = 42

Combine like terms: 3x + x = 4x
2 + 4x = 42

Solving
2 + 4x = 42

Solving for variable 'x'.

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

Add '-2' to each side of the equation.
2 + -2 + 4x = 42 + -2

Combine like terms: 2 + -2 = 0
0 + 4x = 42 + -2
4x = 42 + -2

Combine like terms: 42 + -2 = 40
4x = 40

Divide each side by '4'.
x = 10

Simplifying
x = 10