8,5:6/8= 3/8×7/9= 3,5:2 1/5= PAKAI CARA

semoga membantu.............

(1) 8,5 : 6/8
85/10 : 6/8
85/10 x 8/6
=680/60
= 11 2/6
(2) 3/8 x 7/9
=21/72
=7/24
(3) 3,5 : 2 1/5
= 35/10 : 11/5
=35/10 X 5/11
=385/50
= 7 35/50
Maaf klo krg tepat
Semoga membantu : )