Question

Answer 1

` 1/2 + 2/3 + 7/6`

` = 3/6 + 4/6 + 7/6`

` = ( 3 + 4 + 7)/6`

` = 14/6`

` = 7/3`

`-> A`

Answer 2

`1/2+2/3+7/6`

Ta có : `MSC:6`

`=(1xx3)/(2xx3)+(2xx2)/(3xx2)+7/6`

`=3/6+4/6+7/6`

`=(3+4+7)/6`

`=14/6`

`=(14:2)/(6:2)`

`=7/3`

Đáp án đúng `->A)7/3`