Now at this point, you'd be done solving the problem, because this answer IS correct, but it's not one of the answer choices. SO, notice that your answer looks very similar, with just some signs changes, so we're going to multiply only the left side by (-1) / (-1). You're only doing this to the left side because -1/-1 still equals 1, and so by identity definition, it doesn't change either side. and we should end up with:
(3y+2) / (-1+y) = X ... note that (-1+y) = (y-1) and there ya go!