12 : 4 =	10 : 5 =
3 : 3 =	8 : 4 =
25 : 5 =	21 : 3 =
18 : 6 =	16 : 4 =
3 : 3 =	40 : 5 =
18 : 3 =	24 : 6 =
14 : 7 =	28 : 7 =
18 : 3 =	14 : 7 =
10 : 5 =	25 : 5 =
16 : 4 =	4 : 4 =
2 : 1 =	2 : 2 =
12 : 4 =	6 : 2 =
36 : 9 =	20 : 5 =
15 : 3 =	35 : 7 =