8/20=4/10=2/5 7/14=1/2
75/300=5/20=1/4 21/28=3/4
150/600=1/4 25/175=1/7
12/15=4/5 53/26=2/1=2
5/75=1/15 36/81=4/9
23/46=1/2 270/5310=3/59
22/33=2/3 45/135=9/27=1/3
480/720=14/18=7/9 125/400=25/80=5/16
45/400=9/80 49/147=1/3
14/42=1/3 28/24=7/6=1 1/6
12/24=1/2 28/63=4/9
6/30=1/5 15/40=3/8
5/15=1/3 4/10=2/5
13/169=1/13 83/27= 3 целых 2/27
18/108=9/54=1/6 11/55=1/5
32/40=4/5 126/146=63/73
16/24=4/6=2/3 28/42=4/6=2/3
15/25=3/5 72/90= 8/10=4/5
210/1540=21/154=3/22 182/195=не могу решить
360/2940=18/147 30/75=2/5
5/35=1/7 20/70=2/7
18/27=2/3 18/4=9/2=4 1/2
33/42=11/14 20/24=5/6
45/60=9/12=3/4 30/36=5/6