A = 54/56 : 27/34 : 17/16 Tính nhanh nha mn help meeeee

`#wdr`

`A= 54/56 : 27/34 : 17/16`

`A= 54/56 xx 34/27 xx 16/17`

`A= (54 xx 34 xx 16)/(56 xx 27 xx 17)`

`A= (2 xx 2 xx 2)/(7 xx 1 xx 1)`

`A= 8/7`