Answer:
1. 7 1/4
2. 3 1/4
3. 2 2/3
4. 2 1/2
Step-by-step explanation:
1. You subtract 8-3/4=7 1/4
2. You have to add 2 3/4 hour + 1/2 an hour = 3 1/4 hours
3. You take 3 2/6 - 2/3= to make it easier you want to change the fractions so there the same denominator 2/6->1/3 now it will be much easier to subtract 3 1/3-2/3= 2 2/3
4. Finally you do 8-5 1/2 =2 1/2
I hope this helps if not you can comment and I'll try and further explain
