а) $6\frac{6}{11} * \frac{3}{4} : 2\frac{2}{5} * 2\frac{1}{5}$;
б) $9\frac{1}{3} : \frac{7}{8} * \frac{7}{16} : \frac{14}{27}$;
в) $\frac{5}{14} + \frac{18}{35} + (1\frac{1}{4} - \frac{5}{14}) : (\frac{5}{12})^2$;
г) $(\frac{7}{12} - \frac{8}{15})^2 + \frac{4}{5} * (\frac{7}{10} - \frac{9}{16})$.
$6\frac{6}{11} * \frac{3}{4} : 2\frac{2}{5} * 2\frac{1}{5} = \frac{72}{11} * \frac{3}{4} : \frac{12}{5} * \frac{11}{5} = \frac{18}{11} * \frac{3}{1} * \frac{5}{12} * \frac{11}{5} = \frac{3}{1} * \frac{3}{1} * \frac{1}{2} * \frac{1}{1} = \frac{9}{2} = 4\frac{1}{2}$
$9\frac{1}{3} : \frac{7}{8} * \frac{7}{16} : \frac{14}{27} = \frac{28}{3} * \frac{8}{7} * \frac{7}{16} * \frac{27}{14} = \frac{1}{1} * \frac{1}{1} * \frac{1}{1} * \frac{9}{1} = 9$
$\frac{5}{14} + \frac{18}{35} + (1\frac{1}{4} - \frac{5}{14}) : (\frac{5}{12})^2 = \frac{5}{14} + \frac{18}{35} + (\frac{5}{4} - \frac{5}{14}) : \frac{25}{144} = \frac{5}{14} + \frac{18}{35} + \frac{35 - 10}{28} * \frac{144}{25} = \frac{5}{14} + \frac{18}{35} + \frac{25}{28} * \frac{144}{25} = \frac{5}{14} + \frac{18}{35} + \frac{36}{7} = \frac{5 * 5 + 18 * 2 + 36 * 10}{70} = \frac{25 + 36 + 360}{70} = \frac{421}{70} = 6\frac{1}{70}$
$(\frac{7}{12} - \frac{8}{15})^2 + \frac{4}{5} * (\frac{7}{10} - \frac{9}{16}) = (\frac{7 * 5 - 8 * 4}{60})^2 + \frac{4}{5} * \frac{7 * 16 - 9 * 10}{160} = (\frac{35 - 32}{60})^2 + \frac{4}{5} * \frac{112 - 90}{160} = (\frac{3}{60})^2 + \frac{4}{5} * \frac{22}{160} = (\frac{1}{20})^2 + \frac{4}{5} * \frac{11}{80} = \frac{1}{400} + \frac{1}{5} * \frac{11}{20} = \frac{1}{400} + \frac{11}{100} = \frac{1 + 44}{400} = \frac{45}{400} = \frac{9}{80}$
Пожауйста, оцените решение
