\[\frac{8 - x}{6} + \frac{3 - x}{4} < 0\ \ \ \ \ | \cdot 12\]
\[2 \cdot (8 - x) + 3 \cdot (3 - x) < 0\]
\[16 - 2x + 9 - 3x < 0\]
\[- 5x < - 25\]
\[x > 5.\]
\[Ответ:6.\]