\( \frac{3}{6}x + \frac{2}{6}x = 10 \)
\( \frac{5}{6}x = 10 \)
\( x = 10 \cdot \frac{6}{5} \)
\( x = \frac{60}{5} \)
\( x = 12 \)
Ответ: x = 12.