Help me please no 11-15pake jalan​

Jawab:

11. 83/8 : 45/100 = 83/8 x 100/45 = 830/36 = 23 2/36 = 23 1/18

12. 36/15 : 86/100 = 36/15 x 100/86 = 360/129 = 2 102/129 = 2 34/43

13. 108/10 : 40/100 = 108/10 x 100/40 = 108/4  = 27

14. 544/100 : 35/100 = 544/100 x 100/35 = 544/35 = 15 19/35

15. 64/100 : 56/100 = 64/100 x 100/56= 64/56 = 1 8/56 = 1 1/7