Thực hiện phép tính (hợp lí nếu có thể) Mn giúp e với ạ

Đáp án:

`e) 16.(1/4)^3 : [(-2/3)^2 + 0,75 - 1 4/3]`

`= 16 . 1/64 : [4/9 + 3/4 -7/3]`

`= 1/4 : (-41/36)`

`= -9/41`

`f) 4/7 . 3/13 - 4/7 . (-2)/13 + 8/13 : 7/4`

`= 4/7 . 3/13 - 4/7 . (-2)/13 + 8/13 . 4/7`

`= 4/7 . (3/13 - (-2)/13 + 8/13)`

`= 4/7 . 1`

`= 4/7`

`g) 11/19 - (-19/18 - 8/19) - 1/18 + 5,2`

`= 11/19 + 19/18 + 8/19 - 1/18 + 26/5`

`= (11/19 + 8/19) + (19/18 - 1/18) + 26/5`

`= 1 + 1 + 26/5`

`= 2 + 26/5`

`= 36/5`

`h) 15/34 + 7/21 + 19/34 - 1 15/17 + 2/3`

`= 15/34 + 19/34 + 7/21 - 32/17 + 2/3`

`= (15/34 + 19/34) + (7/21 + 2/3) - 32/17`

`= 1 + 1 - 32/17`

`= 2 - 32/17`

`= 2/17`