pliss tolong jawab no9, 10 .dan pakai cara

9.b.3per5
10.....
maaf cuma no 9 saja yg saya tau
dan semoga bermanfaat

9. 16/20 - 9/15 + 4/10 = 4/5 - 3/5 + 2/5 = 3/5

10. 2 4/24 - 1 10/16 + 11/24 = (2-1) 1/6 - 5/8 + 11/24 = 1 4/24 - 15/24 + 11/24 = 1