1-1/2=, 7-1/2= ,1-3/4=, 6-3/4=, 1-1/5=, 3-1/5=, 3-1/7=,6-2/9=,7-1/6= ,10-2/5= ,8-1/11= ,5-3/8=, 4-3/10=, 9-4/13=, 11-5/12=,

1. 0,5 2. 6,5 3. 1/4 4. 5 1/4 5. 4/5 6. 2 4/5 7. 2 6/7 8. 5 7/9 9. 6 5/6 10. 9 3/5 11. 7 10/11 12. 4 5/8 13. 3 7/10 14. 8 9/13 15. 10 7/12

1-1/2=1/2 ,7-1/2=6 1/2 ,1-3/4=1/4 6-3/4=5 1/4 ,1-1/5=4/5 ,3-1/5=2 4/5 ,3-1/7=2 6/7 ,6-2/9=5 7/9 ,7-1/6=6 5/6 ,10-2/5=9 3/5 ,8-1/11=7 10/11 ,5-3/8=4 5/8 ,4-3/10=3 7/10 ,9-4/13=8 9/13 ,11-5/12=10 7/12