x-y=1
2x-2y=3
----------------------------
x*(y-1)=0
1/x+1/(y-1)=2
------------------
x^2+y^2=-2
x-y=2
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Verified answer
x-y=1
2x-2y=3
----------------------------
x*(y-1)=0
1/x+1/(y-1)=2
------------------
x^2+y^2=-2
x-y=2