3x+6=-42-9x

Solution for 3x+6=-42-9x equation:

Simplifying
3x + 6 = -42 + -9x

Reorder the terms:
6 + 3x = -42 + -9x

Solving
6 + 3x = -42 + -9x

Solving for variable 'x'.

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

Add '9x' to each side of the equation.
6 + 3x + 9x = -42 + -9x + 9x

Combine like terms: 3x + 9x = 12x
6 + 12x = -42 + -9x + 9x

Combine like terms: -9x + 9x = 0
6 + 12x = -42 + 0
6 + 12x = -42

Add '-6' to each side of the equation.
6 + -6 + 12x = -42 + -6

Combine like terms: 6 + -6 = 0
0 + 12x = -42 + -6
12x = -42 + -6

Combine like terms: -42 + -6 = -48
12x = -48

Divide each side by '12'.
x = -4

Simplifying
x = -4