Negative ten-thirds is your answer. Take the initial equation of -3x +2 = 12, subtract two from both sides so as to get x "by itself," coming out with -3x=10. Then divide both sides by -3 so you can end up with x = ___, you come out with x = 10/-3, which is negative ten-thirds. Plugging the answer in for "x," you will see that the equation makes sense. Hope that helps!
