Đáp án:
`(3 1/3 . 1,9+9,5 :4 1/3).(62/75-4/25)=665/117`
Giải thích các bước giải:
`(3 1/3 . 1,9+9,5 :4 1/3).(62/75-4/25)`
`=(10/3 . 19/10+95/10 : 13/3).(62/75-12/75)`
`=(19/3+19/2 . 3/13). 50/75`
`=(19/3+57/26) . 2/3`
`=(494/78+171/78). 2/3`
`=665/78 . 2/3`
`=665/117`
