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Đáp án `+` Giải thích các bước giải:

1) `(3/4 + 1/6) : 2/3`

`= 3/4 : 2/3 + 1/6 : 2/3`

`= 3/4 . 3/2 + 1/6 . 3/2`

`= 9/8 + 1/4`

`= 9/8 + 2/8`

`= 11/8.`

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

`= 1 + 3/5 . (-3)/2`

`= 1 + (-9)/10`

`= 1/10.`

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

`= 2/5 : 6/5 + 2/3 : 6/5`

`= 2/5 . 5/6 + 2/3 . 5/6`

`= 1/3 + 1/9`

`= 3/9 + 1/9`

`= 4/9.`

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

`= (2/5 - 19/15) : 5/3`

`= 2/5 : 5/3 - 19/15 : 5/3`

`= 2/5 . 3/5 - 19/15 . 3/5 `

`= 6/25 - 19/25`

`= (-13)/25.`

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

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

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

`= (-16)/3 . (-1)/3 + 8/5`

`= 16/9 + 8/5`

`= 80/45 + 72/45`

`= 152/45.`