tính nhanh:(1/9-5/17)+3/6+(-12/17+-1/2)+5/9 20/08/2021 Bởi Allison tính nhanh:(1/9-5/17)+3/6+(-12/17+-1/2)+5/9
Đáp án: `(1/9-5/17)+3/6+(-12/17+ -1/2)+5/9` `=1/9-5/17+3/6-12/17-1/2+5/9` `=(1/9+5/9)+(-5/17-12/17)+(3/6-1/2)` `=2/3+(-1)+0` `=-1/3` Bình luận
Đáp án: `(1/9-5/17)+3/6+(-12/17+-1/2)+5/9` `= 1/9 – 5/17 + 3/6 -12/17 – 1/2 + 5/9` `= (1/9 + 5/9) + (-5/17 – 12/17) + (3/6 – 1/2)` `= 2/3 + (-1) + 0` `= -1/3` Bình luận
Đáp án:
`(1/9-5/17)+3/6+(-12/17+ -1/2)+5/9`
`=1/9-5/17+3/6-12/17-1/2+5/9`
`=(1/9+5/9)+(-5/17-12/17)+(3/6-1/2)`
`=2/3+(-1)+0`
`=-1/3`
Đáp án:
`(1/9-5/17)+3/6+(-12/17+-1/2)+5/9`
`= 1/9 – 5/17 + 3/6 -12/17 – 1/2 + 5/9`
`= (1/9 + 5/9) + (-5/17 – 12/17) + (3/6 – 1/2)`
`= 2/3 + (-1) + 0`
`= -1/3`