ху-х-3=0
х(у-1)-3=0
х(у-1)=3
х=3/(у-1)
у-1=3/х
у=1+(3/х)
ху/2 + у = 5
у(х/2+1)=5
х/2+1=5/у
х/2=(5/у)-1
х=2((5/у)-1)
у=5/(х/2+1)
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Verified answer
ху-х-3=0
х(у-1)-3=0
х(у-1)=3
х=3/(у-1)
у-1=3/х
у=1+(3/х)
ху/2 + у = 5
у(х/2+1)=5
х/2+1=5/у
х/2=(5/у)-1
х=2((5/у)-1)
у=5/(х/2+1)