解方程组15/(x+y-1)+4/(x-y-2)=5,10/(x+y-1)-6/(x-y-2)=-1
{15/(x+y-1)+4/(x-y-2)=5{10/(x+y-1)-6/(x-y-2)=-1(可以用换元法)...
{15/(x+y-1)+4/(x-y-2)=5
{10/(x+y-1)-6/(x-y-2)=-1(可以用换元法) 展开
{10/(x+y-1)-6/(x-y-2)=-1(可以用换元法) 展开
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