\(\left|2x:\dfrac{4}{5}-\dfrac{1,6}{4}\right|=\dfrac{7}{5}\\ TH1:\\ 2x:\dfrac{4}{5}-\dfrac{1,6}{4}=\dfrac{7}{5}\\ 2x:\dfrac{4}{5}=\dfrac{7}{5}+\dfrac{1,6}{4}\\ 2x:\dfrac{4}{5}=\dfrac{9}{5}\\ 2x=\dfrac{9}{5}.\dfrac{4}{5}\\ 2x=\dfrac{36}{25}\\ x=\dfrac{36}{25}:2\\ x=\dfrac{18}{25}\\ TH2:\\ 2x:\dfrac{4}{5}-\dfrac{1,6}{4}=\dfrac{-7}{5}\\ 2x:\dfrac{4}{5}=\dfrac{-7}{5}+\dfrac{1,6}{4}\\ 2x:\dfrac{4}{5}=-1\\ 2x=-1.\dfrac{4}{5}\\ 2x=\dfrac{-4}{5}\\ x=\dfrac{-4}{5}:2\\ x=-\dfrac{2}{5}\)
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