3/8: 1/4 4/11: 4/13 22/23: 11 14: 28/31 9целых 5/7: 1 целую 23/28 6целых 6/11: 1 целую 2/7

4/11:4/13=4/11*13/4=13/11=1 2/11
22/23:11=22/23*1/11=2/23
14:28/31=14*31/28=31/2=15 1/2
9 5/7:1 23/28=68/7*28/51=272/51=5 1/3
6 6/11:1 2/7=72/11*7/9=56/11=5 1/11