tolong dijawab semua ya...

13. 8/9:8/18
= 8/9×18/8
= 2

14. 3,2/0,8
= 32/10×10/8
= 4

15. 19,6 : 2,8
= 196/10 × 10/28
= 7

16. 15:3/7
= 15/1×7/3
= 35

17. 3,4:3,3
= 34/10 × 10/33
=34/33

18. 3 2/5 : 4
= 17/5 × 1/4
= 17/20
= 85/100 = 0,85 / baju

25. D
26. C