Question

пожалуйста помогите даю 50 балл​

Answer 1

$\displaystyle\bf\\\frac{\frac{2}{5} }{4} -\frac{2}{\frac{5}{4} } -\frac{1}{3} =\frac{2}{5\cdot 4} -\frac{2\cdot 4}{5} -\frac{1}{3} =\frac{1}{10}-\frac{8}{5} -\frac{1}{3} =\\\\\\=\frac{1\cdot 3-8\cdot 6-1\cdot 10}{30} =\frac{-55}{30} =-\frac{11}{6} =-1\frac{5}{6} \\\\\\Otvet \ : \ -1\frac{5}{6}$