\[\frac{0.6}{0.14}=\frac{60}{14}=\frac{30}{7}=4\frac{2}{7}.\]
\[\frac{1\frac{4}{5}}{0.3}=\frac{9}{5}:\frac{3}{10}=\frac{9}{5}\cdot\frac{10}{3}=6.\]
Разность: \[4\frac{2}{7}-6=-1\frac{5}{7}.\]
Ответ: 1) \(-1\frac{5}{7}\).