Question

Really need help with this problem. Picture included

Answer 1

The two angle measures are equal (which is the point of an angle bisector), so you have
  y + 30 = 3y - 50
  30 = 2y - 50 . . . . . . . . subtract y
  80 = 2y . . . . . . . . . . . . add 50
  40 = y . . . . . . . . . . . . . .divide by the coefficient of y

The value of y is 40.