8/23 – 8/25 + 3/27 – 8/29 / 12/23 – 12/25 + 12/27 – 12/29 18/09/2021 Bởi Anna 8/23 – 8/25 + 3/27 – 8/29 / 12/23 – 12/25 + 12/27 – 12/29
`(8/23 – 8/25+ 8/27 -8/29)/(12/23 – 12/25 +12/27-12/29)` `= (8(1/23- 1/25 + 1/27 -1/29))/(12(1/23-1/25+1/27-1/29))` `= 8/12 . (1/23- 1/25 + 1/27 -1/29)/(1/23- 1/25 + 1/27 -1/29)` `= 8/12 .1` `= 2/3` Bình luận
`(8/23 – 8/25+ 8/27 -8/29)/(12/23 – 12/25 +12/27-12/29)`
`= (8(1/23- 1/25 + 1/27 -1/29))/(12(1/23-1/25+1/27-1/29))`
`= 8/12 . (1/23- 1/25 + 1/27 -1/29)/(1/23- 1/25 + 1/27 -1/29)`
`= 8/12 .1`
`= 2/3`
Đáp án:
Giải thích các bước giải: