Question

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Answer 1

\(\Rightarrow\left|x-\dfrac{2}{5}\right|=\dfrac{3}{10}\Rightarrow\left[{}\begin{matrix}x-\dfrac{2}{5}=\dfrac{3}{10}\\\dfrac{2}{5}-x=\dfrac{3}{10}\end{matrix}\right.\Rightarrow\left[{}\begin{matrix}x=\dfrac{7}{10}\\x=\dfrac{1}{10}\end{matrix}\right.\)