\(\dfrac{1}{5}:\dfrac{1}{10}-\dfrac{1}{3}.\dfrac{6}{5}-\dfrac{9}{4}\)
=\(\dfrac{1}{5}.10-\dfrac{2}{5}-\dfrac{9}{4}\)
=2-\(\dfrac{53}{20}\)
=-\(\dfrac{13}{20}\)
\(\dfrac{1}{5}:\dfrac{1}{10}-\dfrac{1}{3}.\dfrac{6}{5}-\dfrac{9}{4}=\dfrac{1}{5}.10-\dfrac{2}{5}-\dfrac{9}{4}=2-\dfrac{2}{5}-\dfrac{9}{4}=\dfrac{40}{20}-\dfrac{8}{20}-\dfrac{45}{20}=\dfrac{-13}{20}\)