Question

Giúp mik bài 2 nhanh nha

Answer 1

`2/3 xx 4/5 xx 6/7`

`=(2xx4xx6)/(3xx5xx7)`

`=48/105`

`=16/35`

____________________________
`2/7 xx 5`

`=(2xx5)/7`

`=10/7`

____________________________

`4 xx 2/9`

`=(4xx2)/9`

`=8/9`

____________________________

`1/3 : 3/4`

`=1/3 xx 4/3`

`=(1xx4)/(3xx3)`

`=4/9`

______________________________

`6/7 : 3`

`=6/7 xx 1/3`

`=(6xx1)/(7xx3)`

`=6/21`

`=2/7`

__________________________

`8 : 4/5`

`=8 xx 5/4`

`=(8xx5)/4`

`=40/4`

`=10`

Answer 2