3\12 = 3:3 \ 12:3 = 1\4
4\12 = 4:4\12:4= 1\3
6\54 = 6:6\54:6 = 1\9
25\70 = 25:5\70:5= 5\14
26\65 = 26:13\65:13 = 2\5
12\60 = 12:12\60:12 = 1\5
36\48 = 36:12\48:12 = 2\3
35\105 = 35:35\105:35 = 1\3
480 \ 720 = 480:240 \ 720:240 = 2\3
204\306 = 204:102\ 306:102 = 2\3