\[\frac{18}{35}:12+\frac{1}{10}=\frac{18}{35}\cdot\frac{1}{12}+\frac{1}{10}=\frac{3}{70}+\frac{1}{10}=\frac{3}{70}+\frac{7}{70}=\frac{10}{70}=\frac{1}{7}.\]
Ответ: \(\frac{1}{7}\).