\[\left\{ \begin{matrix} x = \frac{7y - 34}{y - 5}\text{\ \ } \\ x^{2} + y^{2} = 52 \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ }\]
\[x = \frac{7y - 35 + 1}{y - 5} = 7 + \frac{1}{y - 5}\]
\[1)\ y - 5 = 1:\]
\[y = 6 \Longrightarrow x = 8.\]
\[2)\ y - 5 = - 1:\]
\[y = 4 \Longrightarrow x = 6.\]
\[Подставим:\]
\[1)\ (6;4):\]
\[x^{2} + y^{2} = 52\]
\[36 + 16 = 52.\]
\[2)\ (8;1):\]
\[x^{2} + y^{2} = 52\]
\[64 + 1 = 52\]
\[65 \neq 52.\]
\[Ответ:(6;4).\]