999/1000x1/100+111/1000x27/100
=999/1000x1/100+111/1000x9x3/100
=999/1000x(1/100+3/100)
=999/1000x1/25
=999/25000
如果本题有什么不明白可以追问,
我看了一下计算但是我不知道步凑是怎么来的谢谢解释一下
27/100分成9x3/100呀9和前面的111/1000相乘=999/1000再把999/1000提出来
999/1000x1/100+111/1000x27/100(27/100分成9x3/100)=999/1000x1/100+111/1000x9x3/100(9和前面的111/1000相乘=999/1000再把999/1000提出来)=999/1000x(1/100+3/100)=999/1000x1/25=999/25000
额谢谢我看懂了真的很感谢你很欣赏你的才华好久没做了都忘记了谢谢了