3x-5+8x+x=42

Solution for 3x-5+8x+x=42 equation:

Simplifying
3x + -5 + 8x + x = 42

Reorder the terms:
-5 + 3x + 8x + x = 42

Combine like terms: 3x + 8x = 11x
-5 + 11x + x = 42

Combine like terms: 11x + x = 12x
-5 + 12x = 42

Solving
-5 + 12x = 42

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + 12x = 42 + 5

Combine like terms: -5 + 5 = 0
0 + 12x = 42 + 5
12x = 42 + 5

Combine like terms: 42 + 5 = 47
12x = 47

Divide each side by '12'.
x = 3.916666667

Simplifying
x = 3.916666667