Сократите дробь используя признак делимости 11/22, 10/25, 27/45,9/12, 15/18,24/30,28/32,21/15,75/45,38/66,54/90,36/84,49/56,55/77,26/65,51/85

11/22=1/2
10/25=2/5
27/45=3/5
9/12=3/4
15/18=5/6
24/30=4/5
28/32=7/8
21/15=7/5
75/45=5/3
38/66=19/33
54/90=3/5
36/84=3/7
49/56=7/8
55/77=5/7
26/65=2/5
51/85=3/5