Sửa đề: \(\left\{{}\begin{matrix}\dfrac{3}{x-2}+\dfrac{2}{y+1}=\dfrac{17}{5}\\\dfrac{2x-2}{x-2}+\dfrac{y+2}{y+1}=\dfrac{26}{5}\end{matrix}\right.\)
\(\Leftrightarrow\left\{{}\begin{matrix}\dfrac{3}{x-2}+\dfrac{2}{y+1}=\dfrac{17}{5}\\\dfrac{2x-4+2}{x-2}+\dfrac{y+1+1}{y+1}=\dfrac{26}{5}\end{matrix}\right.\)
\(\Leftrightarrow\left\{{}\begin{matrix}\dfrac{3}{x-2}+\dfrac{2}{y+1}=\dfrac{17}{5}\\\dfrac{2}{x-2}+\dfrac{1}{y+1}=\dfrac{11}{5}\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}\dfrac{1}{x-2}=1\\\dfrac{1}{y+1}=\dfrac{1}{5}\end{matrix}\right.\)
\(\Leftrightarrow\left\{{}\begin{matrix}x-2=1\\y+1=5\end{matrix}\right.\Leftrightarrow\left(x,y\right)=\left(3;4\right)\)
\(\left\{{}\begin{matrix}\dfrac{3}{x-2}+\dfrac{2}{y+1}=\dfrac{17}{5}\\\dfrac{2x-2}{x-2}+\dfrac{y+1}{y-1}=\dfrac{26}{5}\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}\dfrac{2}{y+1}=\dfrac{17}{5}-\dfrac{3}{x-2}\\\dfrac{2x-2}{x-2}+\dfrac{y-1+2}{y-1}=\dfrac{26}{5}\end{matrix}\right.\)
\(\left\{{}\begin{matrix}\dfrac{2}{y+1}=\dfrac{17}{5}-\dfrac{3}{x-2}\\\dfrac{2x-2}{x-2}+1+\dfrac{2}{y-1}=\dfrac{26}{5}\end{matrix}\right.\left\{{}\begin{matrix}\dfrac{2}{y+1}=.......\\\dfrac{2}{y-1}=\dfrac{21}{5}-\dfrac{2x-2}{x-2}\end{matrix}\right.\)
\(\Rightarrow\dfrac{17}{5}-\dfrac{3}{x-2}=\dfrac{21}{5}-\dfrac{2x-2}{x-2}\)\(\Rightarrow\dfrac{4}{5}=\dfrac{2x-5}{x-2}\Rightarrow10x-25=4x-8\Rightarrow x=\dfrac{17}{6}\Rightarrow y=-11\)
