Đáp án `+` Giải thích các bước giải:

1) `(3/7 - 1/6) : 2/3`

`= (18/42 - 7/6) . 3/2`

`= 3/2 . 3/2`

`= 9/4.`

2) `-5/2 : (3/4 - 1/2) `

`=-5/2 : (3/4 - 2/4) `

`= -5/2 : 1/4`

`= -5/2 . 4`

`= -10.`

3) `3/5 : (3/5 + (-2)/3)`

`= 3/5 : (9/15 + (-10)/15)`

`= 3/5 : (-1)/15`

`= 3/5 . (-15)`

`= -9.`

4) `(2/5 + 2/3) : 6/5`

`= (6/15 + 10/15) . 5/6`

`= 16/15 . 5/6`

`= 8/3.`

5) `(4/10 - 19/15) : 5/3`

`= (12/30 - 38/130) . 3/5`

`= (-26)/30 . 3/5`

`= (-13)/15 . 3/5`

`= -39/75.`

6) `32/15 : (-6/5 + 4/3)`

`= 32/15 : (-18/15 + 20/15)`

`= 32/15 : 2/15`

`= 32/15 . 15/2`

`= 16.`