Respuesta :
subtract 3x from both sides
3x + 30 = -42
subtract 30 from both sides
3x = -72
divide both sides by 3
x = -24
3x + 30 = -42
subtract 30 from both sides
3x = -72
divide both sides by 3
x = -24
Just subtract 30 from 6 = 24So x = -24. What I did is divide them both sides by 3.