Sagot :
Answer:
11. 1:2 = 4:8
12. 3:9 = 9:27
13. 12:20 = 9:15
14. 8:10 = 40:50
15. 5:7 =25:35
16. 33:27 = 11:9
17. 7:2 = 14:4
18. 36:30 = 30:25
19. 17:10 = 34:20
20. 2:7 = 6:21
Step-by-step explanation:
1:2
3:9 = 1:3
12:20 = 3:5
8:10 = 4:5
5:7
25:35 = 5:7
33:27 = 11:9
4:8 = 1:2
7:2
36:30 = 6:5
14:4 = 7:2
9:15 = 3:5
17:10
40:50 = 4:5
2:7
11:9
30:25 = 6:5
9:27 = 1:3
34:20 = 17:10
6:21 = 2:7