I need help with this question

In the image below CG bisects LBGD, GA = 10, GC = 5, GD = 3 and GE = 12. Find GF A 10 F B G X X 12 5 3 D E Using the fact that opposite angles are equal: AFIFE = 5 by the Angle Bisector Theorem . . (Give your answer in reduced form.) Using the highlighter trick: the blue triangle is ACE (Give your answer in alphabetical order.) The three red points do lie on a single line, so by Melelaus' = Theorem GF = (Give your answer in reduced form.)