[tex][ \sqrt{6561}* \frac{-3,4(1)}{-27,9}-( \frac{4}{3})^{-2} *0,(4)]*(- \frac{6}{ \sqrt{7} })^{2}* \frac{1}{10}= \\ \\=[81* \frac{ \frac{307}{90} }{ \frac{279}{10} } -( \frac{3}{4})^{2}* \frac{4}{9} ]* \frac{36}{7} * \frac{1}{10}= \\ \\=(81* \frac{307}{90}* \frac{10}{279}- \frac{9}{16} * \frac{4}{9})* \frac{36}{70}= \\ \\=(81* \frac{307}{2511}- \frac{1}{4})* \frac{18}{35} = \\ \\ =( \frac{307}{31} - \frac{1}{4})* \frac{18}{35}= \\ \\= \frac{1228-31}{124} * \frac{18}{35}= \\ \\=\frac{1197}{124} * \frac{18}{35}= \\ \\[/tex]
[tex] =\frac{171}{62}* \frac{9}{5} = \frac{1539}{310}.[/tex]
/robertinni
