\(-\dfrac{2}{5}-\dfrac{3}{5}-\dfrac{2}{5}-\dfrac{3}{5}+\dfrac{4}{9}\\ =\left(\dfrac{-2-3-2-3}{5}\right)+\dfrac{4}{9}\\ =-2+\dfrac{4}{9}\\ =-\dfrac{14}{9}\)
\(\dfrac{-2}{5}-\dfrac{3}{5}-\dfrac{2}{5}-\dfrac{3}{5}+\dfrac{4}{9}\)
= \(\left(\dfrac{-2}{5}-\dfrac{3}{5}-\dfrac{2}{5}-\dfrac{3}{5}\right)+\dfrac{4}{9}\)
= \(-2+\dfrac{4}{9}\)
= \(\dfrac{-14}{9}\)
\(\dfrac{-2}{5}-\dfrac{3}{5}-\dfrac{2}{5}-\dfrac{3}{5}+\dfrac{4}{9}\)
= \(\left(\dfrac{-2}{5}-\dfrac{2}{5}-\dfrac{3}{5}-\dfrac{3}{5}\right)+\dfrac{4}{9}\)
= \(-2+\dfrac{4}{9}\)
= \(\dfrac{-14}{9}\)
\(\dfrac{-2}{5}-\dfrac{3}{5}-\dfrac{2}{5}-\dfrac{3}{5}+\dfrac{4}{9}\)
\(=\dfrac{-2-3-2-3}{5}+\dfrac{4}{9}\)
\(=\dfrac{-10}{5}+\dfrac{4}{9}=-2+\dfrac{4}{9}=\dfrac{-18}{9}+\dfrac{4}{9}=\dfrac{-18+4}{9}=\dfrac{-14}{9}\)
\(\dfrac{-2}{5}-\dfrac{3}{5}-\dfrac{2}{5}-\dfrac{3}{5}+\dfrac{4}{9}=\dfrac{-2-3-2-3}{5}+\dfrac{4}{9}\)
\(=\dfrac{-10}{5}+\dfrac{4}{9}=-2+\dfrac{4}{9}=\dfrac{-18}{9}+\dfrac{4}{9}=\dfrac{-18+4}{9}=\dfrac{-14}{9}\)