Даю 36 балов только решите умоляю номер 4

[latex]= \frac{97 * \frac{36+61}{36}:36 }{( \frac{4}{9} + \frac{1}{ \frac{4}{9}} )^2} * \frac{4}{10} = \frac{ \frac{97*97}{36*36}}{( \frac{4}{9}+ \frac{9}{4})^2 } * \frac{4}{10} = \frac{ (\frac{97}{36} )^2}{ (\frac{16+81}{36})^2 } * \frac{4}{10} = \frac{ (\frac{97}{36} )^2}{ (\frac{97}{36} )^2} * \frac{4}{10}= \frac{4}{10} = 0,4[/latex] * 0,(4)=[latex] \frac{4}{9} [/latex]