\[ 36 \frac{7}{18} - 18 \frac{13}{18} = 35 \frac{18+7}{18} - 18 \frac{13}{18} = 35 \frac{25}{18} - 18 \frac{13}{18} = (35-18) + \left(\frac{25}{18} - \frac{13}{18}\right) = 17 + \frac{12}{18} = 17 \frac{12}{18} = 17 \frac{2}{3} \]
Ответ: 17 2/3