mohon yang bisa jawab pertanyaan ini tolong dijawab besok dikumpulkan please....

9. 2 1/3 = 7/3
21 : 7/3= 21 × 3/7
= 9 =B
11. 1 1/2 = 3/2 ×14
= 21 liter
3/5 × 15
= 9 liter
21+9 = 30
= A

9.) 21 : 2 1/3 =
21 : 7/3 =
21 × 3/7 (7 dicoret jd 1 ,21 dicoret jd 3)
3 × 3 = 9 (b)

10.) 2 1/2 + 1 1/2 × 2 2/3 (dikerjakan perkalian dulu) =
2 1/2 +( 3/2 × 8/3 ) =
2 1/2 + 4 = 6 1/2 (c)

11.) botol besar = 3/2 × 14 = 21
botol kecil = 3/5 × 15 = 9
21 + 9 = 30 (a)