tolong di jawab no 1dan2 pakai cara

semoga membantu jika kurang puas silahkan ditanya

1. 0,56 : 0,7 : 0,4

= 56/100 : 7/10 : 4/10

= 14/25 × 10/7 × 10/4

= 4/5 × 10/4

= 2


2. 60% × 5/6 × 0,45

= 60/100 × 5/6 × 45/100

= 3/5 × 5/6 × 9/20

= 1/2 × 9/20

= 9/40




semoga membantu...........