Question

1/9:13/17-1/9:-13/10

Answer 1

`1/9:13/17-1/9:[-13]/10`

`=1/9xx17/13+1/9xx10/13`

`=1/9xx(17/13+10/13)`

`=1/9xx27/13`

`=3/13`

Answer 2

`1/9:13/17-1/9:(-13/10)`

`= 1/9 xx 17/13 -1/9 :(-10/13)`

`=1/9 xx [(17/13 -(-10/13)]`

`=1/9 xx (17+10)/13`

`=1/9 xx27/13`

`=3/13`

 

Answer 3

giúp với :))