2. 7/9 + 5/5
7/9+1
Answer: 1 7/9
3. 85 2/3 - 29 6/7
Answer: 55 17/21
4. 5/2×14=35
3/7×35=15
Answer: 15
5. 4/5 - 2/3= 2/15
Answer: 2/15
