\[\left\{ \begin{matrix} 2x - 1 > x + 3 \\ 7x + 3 > 7 + x \\ \end{matrix}\text{\ \ \ } \right.\ \text{\ \ \ }\]
\[\left\{ \begin{matrix} x > 4\ \ \ \\ 7x > 4 \\ \end{matrix}\text{\ \ } \right.\ \text{\ \ \ \ }\]
\[\left\{ \begin{matrix} x > 4 \\ x > \frac{4}{7} \\ \end{matrix} \right.\ \]
\[Ответ:нет\ таких\ чисел.\]