а) 2,8/16,8=(28/10)/(168/10)=1/6
б) (9/4)/(11/8)=18/11=1 целая 7/11
в) (121/100)/(11/3)=33/100=0,33
г) (34/10)/(204/10)=1/6
д) (7/5)/(34/15)=7/17
е) (117/100)/(9/5)=13/20
ж) (42/10)/(152/10)=21/76
з) (12/5)/(16/15)=9/4=2 целых 1/4
и) (156/100)/(13/6)=18/25
к) (32/10)/(192/10)=1/6
л) (20/7)/(45/14)=8/9
м) (135/100)/(15/4)=9/25