字典翻译 问答 其它 {6/x+y+10/x-y=306/x+y-10/x-y=-1
问题标题:
{6/x+y+10/x-y=306/x+y-10/x-y=-1
问题描述:

{6/x+y+10/x-y=306/x+y-10/x-y=-1

屈颖回答:
  {6/x+y+10/x-y=30(1)   6/x+y-10/x-y=-1(2)   (1)+(2)得:   12/(x+y)=29;   x+y=12/29;(3)   (1)-(2)得:   20/(x-y)=31;   x-y=20/31;(4)   (3)+(4)得:   2x=952/899;   x=476/899;   y=-74/899;   如果本题有什么不明白可以追问,
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