Дроби к наименьшему общему знаменателю. 1.а)3/40. б)7/55. в)9/88 2.а)11/18. б)7/12. в)8/15 3.а)1/64. б)1/52. в)1/91 4.а)1/72. б)1/48. в)1/108 5.а)7/20. б)11/30. в)8/45 6.а)5/51. б)9/34. в)1/6 . 20

1. 3/40, 7/55, 9/88 = 33/440, 72/440, 45/440
2. 11/18, 7/12, 8/15 = 110/180, 105/180, 96/180
3. 1/64, 1/52, 1/91 = 91/5824, 112/5824, 64/5824 
4. 1/72, 1/48, 1/108 = 6/432, 9/432, 4/432
5. 7/20, 11/30, 8/45 = 63/180, 66/180, 4/180
6. 5/51, 9/34, 1/6 = 10/102, 27/102, 17/102