求各位大神帮忙解道方程1/(x-y)-1/(x+y)=3/202/(x+y)+3/(x-y)=19/20

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求各位大神帮忙解道方程1/(x-y)-1/(x+y)=3/202/(x+y)+3/(x-y)=19/20

求各位大神帮忙解道方程1/(x-y)-1/(x+y)=3/202/(x+y)+3/(x-y)=19/20
求各位大神帮忙解道方程
1/(x-y)-1/(x+y)=3/20
2/(x+y)+3/(x-y)=19/20

求各位大神帮忙解道方程1/(x-y)-1/(x+y)=3/202/(x+y)+3/(x-y)=19/20
x=7
y=3
不简略
考虑设1/(x+y)=a
1/(x-y)=b
方程成为a-b=3/20 2a+3b=19/20
得 a=1/10 b=1/4
得 x+y=10 x-y=4
得解

x=7 ,,,,,, y=3