3x+6+5x=-42

Solution for 3x+6+5x=-42 equation:

Simplifying
3x + 6 + 5x = -42

Reorder the terms:
6 + 3x + 5x = -42

Combine like terms: 3x + 5x = 8x
6 + 8x = -42

Solving
6 + 8x = -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 + -6 + 8x = -42 + -6

Combine like terms: 6 + -6 = 0
0 + 8x = -42 + -6
8x = -42 + -6

Combine like terms: -42 + -6 = -48
8x = -48

Divide each side by '8'.
x = -6

Simplifying
x = -6