Giúppp emm với ạ emm cảm ơn mng

`e) ( - 5 )/8 . ( 4/9 + ( - 7 )/12 )`

`= ( - 5 )/8 . ( 16/36 + ( - 21 )/36 )`

`= ( - 5 )/8 . ( - 5 )/36`

`= 25/288`

`f) - 12 . 5/3 + 72 : ( - 6 )`

`= - 20 + ( - 12 )`

`= - 32`

`g) 8/9 + 7/9 : 7 - 9/10`

`= 8/9 + 1/9 - 9/10`

`= 1 - 9/10`

`= 10/10 - 9/10`

`= 1/10`