1. 7/9
2. 2/5 + 1/3 = 6/15 + 5/15 = 11/15
3. 9/4 + 11/3 = 27/12 + 44/12 = 71/12 = 5 11/12
4. 60/7 - 23/7 = 37/7 = 5 2/7
5. 3/6 - 1/6 = 2/6 = 1/3
6. 10/40 - 10/40 = 0/40 = 0
7. 11/2 - 11/4 = 22/4 - 11/4 = 11/4 = 2 3/4
8. 15/5 = 3
9. 20/56 = 5/14
10. 30/90 = 1/3
11. 90/6 = 15
12. 4/3 × 6/1 = 24/4 = 6
13. 6 × 5/2 = 30/2 = 15
14. 6/7 × 12/14 = 72/98 = 36/49
15. 5/8 × 8/3 = 40/24 = 1 16/24 = 1 2/3
