\[ \frac{3}{6}x + \frac{2}{6}x = 10 \]
\[ \frac{5}{6}x = 10 \]
\[ x = 10 : \frac{5}{6} \]
\[ x = 10 \cdot \frac{6}{5} \]
\[ x = \frac{60}{5} \]
\[ x = 12 \]
Ответ: x = 12