tolong ya kak di jawab hanya 7 sampai 10

7. 2 1/2 - 3/4 : 3 = 5/2 -3/4 :3 = 10/4 - 3/4 : 3 = 7/4 :3 = 7/4 x 1/3 = 7/12 jam

8. 156 km : (65 km : 5liter) = 156 km : 13 km/liter = 12 liter

9. 28200 : 12 x 5 = 11.750