14/11 -1= 1 4/11-2/11= 1 4/11 -4/11= 1 4/11 - 7/11= 2/15+4 7/15= 1 2/15 4 7/15= 14/15+ 4 7/15= 1 14/15+ 4 7/15=

1 4/11- 1= 4/11
1 4/11- 2/11= 1 2/11
1 4/11- 4/11= 1
1 4/11- 7/11= 15/11-7/11= 8/11
2/15+ 4 7/15= 4 9/15= 4 3/5
1 2/15+ 4 7/15= 5 6/15= 5 2/5
14/15+ 4 7/15=4 21/15= 4 7/5= 5 2/5
1 4/15+ 4 7/15= 5 11/15