Đáp án:
`5/16 . 24/15 + 2/4 . 4/3 - 7/6`
`= 1/2 + 2/3 - 7/6`
`= 3/6 + 4/6 - 7/6`
`= 0`
`25% - 4/12 + 5/9 - 16/18`
`= 1/4 - 1/3 + 5/9 - 8/9`
`= 1/4 - 1/3 -1/3`
`= 1/4 - 2/3`
`= 3/12 - 8/12`
`= -5/12`
`12/15 - |- 4/24| + 8/60 - (-2020/2021)^0`
`= 12/15 - 4/24 + 8/60 - 1`
`= 4/5 - 1/6 + 2/15 - 1`
`= 24/30 - 5/30 + 4/15 - 30/30`
`= -7/30`