Question

tính 18/27 - 8/27

tính 4/7 x 2/5

tính 3/4 : 2/7

Answer 1

`18/27-8/27`

`=10/27`

 

`4/7xx2/5`

`=8/35`

 

`3/4:2/7`

`=3/4xx7/2`

`=21/8`