42/100=21/50
56/63=8/9
81/60=27/20=1 целая 7/20
72/420=12/70=6/35
75/74=1целая 1/74
35/25=7/5=1 целая 2/5
36/42=6/7
42/32=21/16=1 целая 5/16
42/100=21/50
56/63=8/9
81/60=27/20=1 целая 7/20
72/420=12/70=6/35
75/74=1целая 1/74
35/25=7/5=1 целая 2/5
36/42=6/7
42/32=21/16=1 целая 5/16