tolong no 8,9,10,11 ya.. jawab sebisanya

8. (162+15x28):27 = (162+270):27
= 432 : 27 = 16
9. (9 x 200) : 20 = 1800 : 20
= 90
10. ((24 x 15) - 80) : 28 = (360-80) : 28
= 280 :28 = 10
11. ((30:2) x 4) x 7000 = (15 x 4) x 7000
= 60 x 7000
Rp 420.000