Đáp án `+` Giải thích các bước giải:

`a) 25/17 - 5/11 + 43/17 - 6/11`

`= (25/17 + 43/17) - (5/11 + 6/11)`

`= 68/17 - 11/11`

`= 4 - 1`

`= 3`

`b) 7/24 * 19/11 + 7/24 * 14/11`

`= 7/24 * (19/11 + 14/11)`

`= 7/24 * 33/11`

`= 7/24 * 3`

`= 7/8`

`c) (-2/7)^2 * 49 - 7/12 : (1/3 - 1/8)`

`= ((-2)^2)/(7^2) * 49 - 7/12 : (8/24 - 3/24)`

`= 4/49 * 49 - 7/12 : 5/24`

`= 4 - 7/12 : 5/24`

`= 4 - 7/12 * 24/5`

`= 4 - 14/5`

`= 20/5 - 14/5`

`= 6/5`

`d) (-2)^3 - 4 * (1/2022)^0 - (9: (-1)/(4)) * 0,25`

`= -8 - 4 * 1 - (9:(-1)/(4))*1/4`

`= -8 - 4 - [9*(-4)] * 1/4`

`= -8 - 4 - (-36) * 1/4`

`= -8 -4 - (-9)`

`= -8-4+9`

`= -12 +9`

`= -3`