Дроби к общему знаменателю 1/6 и 1/8, 1/30 и 1/40,1/60 и 1/15,8/17 и 9/34,6/15 и 11/18,1/6 и 1/9,1/30 и 1/50,1/24 и 1/120 3/40и 7/25

1/6 и 1/8 =4/24 и 3/24
1/30 и 1/40=4/120 и 3/120
1/15 и 1/17=17/255 и 15/255
8/17 и 9/34 = 16/34 и 9/34
6/15 и 11/18= 108/270 и 165/270
1/6 и 1/9= 3/18 и 2/18
1/30 и 1/50= 5/150 и 3/150
1/24 и 1/120 = 5/120 и 1/120
3/40 и 7/25 = 15/200 и  56/200