\(2y\left(x+1\right)-x-7=0\)
\(\Rightarrow2y\left(x+1\right)-x-1-6=0\)
\(\Rightarrow2y\left(x+1\right)-\left(x+1\right)=6\)
\(\Rightarrow\left(x+1\right)\left(2y-1\right)=6\)
..........
Chia ra các trường hợp em nhé
\(2y\left(x+1\right)-x-7=0\)
<=> \(2xy+2y-x-7=0\)
<=> \(x\left(2y-1\right)+\left(2y-1\right)-6=0\)
<=> \(\left(x+1\right)\left(2y-1\right)=6\)
bn tự giải nốt nhé