3 per 5 kali 4 per 9 2. 8/10 per 1. 16/20

1.3/5×4/9=12/45
2.28/10×36/20=5.04

semoga membantu^_^

1) 3/5 × 4/9 = 12/45 = 4/15

2) 2 8/10 × 1.16/20 =
28/10 × 36/20 =
1.008/200 =
50.8/200 =
50.1/25

Smoga membantu :))