[tex]\dfrac{-2,4\cdot \dfrac{2}{3} -0,5\cdot (-\dfrac{4}{5} )^{2} }{-0,8\cdot \dfrac{5}{8}+(-\dfrac{1}{2} ) } =\\\\\\=\dfrac{-\dfrac{24}{10} \cdot \dfrac{2}{3}-\dfrac{1}{2} \cdot \frac{16}{25} }{-\dfrac{8}{10} \cdot \dfrac{5}{8} -\dfrac{1}{2} } =\\\\\\=\dfrac{-\dfrac{8}{5}-\dfrac{8}{25} }{-\dfrac{1}{2} -\dfrac{1}{2} } =\\\\\\=\dfrac{-\dfrac{40}{25}-\dfrac{8}{25} }{-1 } =\dfrac{-\dfrac{48}{25} }{-1} =\\\\\\=\dfrac{48}{25} =1\dfrac{23}{25} =1\dfrac{92}{100} =1,92[/tex]
