Answer:
I would like to help you, but I don't see the picture... I will help you the best that I can.
Explanation:
1. Addition all the B's fractions on the diagram,
2. Put the result in decimal number,
3. Addition all the fractions on the diagram,
4. Put the result in decimal number,
5. Put the result of B on the other result to obtain a new fraction,
6. Divided the result to obtain the lowest fraction possible,
7. Here is your answer!
I can't guarantee you that it's the good answer, but it's the best that I can do.