\[\left\{ \begin{matrix} 7x + 4y = 10 \\ 2x + 3y = 1\ \ \ \\ \end{matrix} \right.\ \]
\[(1;2):\]
\[\left\{ \begin{matrix} 7 \cdot 1 + 4 \cdot 2 = 10 \\ 2 \cdot 1 + 3 \cdot 2 = 1\ \ \ \\ \end{matrix} \right.\ \]
\[\left\{ \begin{matrix} 7 + 8 = 10 \\ 2 + 6 = 1\ \ \ \\ \end{matrix} \right.\ \]
\[\left\{ \begin{matrix} 15 \neq 10 \\ 8 \neq 1\ \ \ \ \ \\ \end{matrix} \right.\ \]
\[Не\ является.\]