Answer:
You could put 7/8
Step-by-step explanation:
When there is 3/4 and 5/6, you can write any fraction like that. Example: 2/3, 3/4, 4/5, 5/6, 6/7, 7/8, 8/9
(I was never good at fractions so I don't really know if I'm right. But, I think I am.)
