14.2 только 2 столбика решите

4/6 = 2/3

60/180 = 30/90 = 15/45 =5/15 = 1/3

8/12 = 2/3

60/90 = 2/3

10/12 = 5/6

54/81 = 2/3

57/76 = 3/4

6/9 = 2/3

25/100 = 1/4

10/15 = 2/3

25/100 = 1/4

30/45 = 2/3

45/54 = 5/6

85/100 = 17/20

15/30 = 1/2

40/160 = 1/4

4/6 = 2/3

60/180 = 1/3

20/25 = 4/5

13/26 = 1/2

45/81 = 5/9

5/10 = 1/2

25/75 = 1/3