\(\Leftrightarrow\left|\dfrac{2}{5}-x\right|=\dfrac{2}{3}-\dfrac{5}{9}=\dfrac{1}{9}\)
\(\Leftrightarrow\left[{}\begin{matrix}x-\dfrac{2}{5}=\dfrac{1}{9}\\x-\dfrac{2}{5}=\dfrac{-1}{9}\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{23}{45}\\x=\dfrac{13}{45}\end{matrix}\right.\)