Выполните действия:
а) $\frac{2}{3} * \frac{6}{7} : \frac{4}{7}$;
б) $\frac{11}{12} : \frac{7}{24} * \frac{21}{22}$;
в) $\frac{15}{16} : \frac{3}{8} * \frac{3}{4}$;
г) $\frac{13}{14} * \frac{7}{25} : \frac{13}{25}$;
д) $3\frac{3}{4} * (4\frac{1}{2} : 6\frac{3}{4})$;
е) $(2\frac{2}{7} + 1\frac{1}{7}) * 1\frac{1}{6}$;
ж) $(6\frac{1}{2} - 4\frac{1}{4}) : 2\frac{1}{2}$;
з) $(4\frac{8}{15} - 1\frac{1}{3}) * 1\frac{7}{8}$;
и) $(2\frac{2}{3} + 1\frac{5}{6}) : 1\frac{1}{2}$;
к) $(3\frac{1}{6} - 2\frac{7}{15}) : 1\frac{2}{5}$;
л) $(1\frac{2}{3} + 2\frac{4}{9}) : (4\frac{26}{27} - 2\frac{2}{9})$;
м) $(6\frac{1}{24} - \frac{2}{3}) : (3\frac{1}{2} + 1\frac{7}{8})$.
$\frac{2}{3} * \frac{6}{7} : \frac{4}{7} = \frac{2}{3} * \frac{6}{7} * \frac{7}{4} = \frac{1}{1} * \frac{1}{1} * \frac{1}{1} = 1$
$\frac{11}{12} : \frac{7}{24} * \frac{21}{22} = \frac{11}{12} * \frac{24}{7} * \frac{21}{22} = \frac{1}{1} * \frac{1}{1} * \frac{3}{1} = 3$
$\frac{15}{16} : \frac{3}{8} * \frac{3}{4} = \frac{15}{16} * \frac{8}{3} * \frac{3}{4} = \frac{5}{2} * \frac{1}{1} * \frac{3}{4} = \frac{15}{8} = 1\frac{7}{8}$
$\frac{13}{14} * \frac{7}{25} : \frac{13}{25} = \frac{13}{14} * \frac{7}{25} * \frac{25}{13} = \frac{1}{2} * \frac{1}{1} * \frac{1}{1} = \frac{1}{2}$
$3\frac{3}{4} * (4\frac{1}{2} : 6\frac{3}{4}) = 3\frac{3}{4} * (\frac{9}{2} : \frac{27}{4}) = 3\frac{3}{4} * (\frac{9}{2} * \frac{4}{27}) = 3\frac{3}{4} * (\frac{1}{1} * \frac{2}{3}) = \frac{15}{4} * \frac{2}{3} = \frac{5}{2} * \frac{1}{1} = 2\frac{1}{2}$
$(2\frac{2}{7} + 1\frac{1}{7}) * 1\frac{1}{6} = 3\frac{3}{7} * \frac{7}{6} = \frac{24}{7} * \frac{7}{6} = \frac{24}{1} * \frac{1}{6} = 4$
$(6\frac{1}{2} - 4\frac{1}{4}) : 2\frac{1}{2} = (6\frac{2}{4} - 4\frac{1}{4}) : \frac{5}{2} = 2\frac{1}{4} * \frac{2}{5} = \frac{9}{4} * \frac{2}{5} = \frac{9}{2} * \frac{1}{5} = \frac{9}{10}$
$(4\frac{8}{15} - 1\frac{1}{3}) * 1\frac{7}{8} = (4\frac{8}{15} - 1\frac{5}{15}) * 1\frac{7}{8} = 3\frac{3}{15} * \frac{15}{8} = \frac{48}{15} * \frac{15}{8} = \frac{6}{1} * \frac{1}{1} = 6$
$(2\frac{2}{3} + 1\frac{5}{6}) : 1\frac{1}{2} = (2\frac{4}{6} + 1\frac{5}{6}) : \frac{3}{2} = 3\frac{9}{6} * \frac{2}{3} = \frac{27}{6} * \frac{2}{3} = \frac{9}{3} * \frac{1}{1} = 3$
$(3\frac{1}{6} - 2\frac{7}{15}) : 1\frac{2}{5} = (3\frac{5}{30} - 2\frac{14}{30}) : \frac{7}{5} = (2\frac{35}{30} - 2\frac{14}{30}) * \frac{5}{7} = \frac{21}{30} * \frac{5}{7} = \frac{3}{6} * \frac{1}{1} = \frac{1}{2}$
$(1\frac{2}{3} + 2\frac{4}{9}) : (4\frac{26}{27} - 2\frac{2}{9}) = (1\frac{6}{9} + 2\frac{4}{9}) : (4\frac{26}{27} - 2\frac{6}{27}) = 3\frac{10}{9} : 2\frac{20}{27} = \frac{37}{9} : \frac{74}{27} = \frac{37}{9} * \frac{27}{74} = \frac{1}{1} * \frac{3}{2} = 1\frac{1}{2}$
$(6\frac{1}{24} - \frac{2}{3}) : (3\frac{1}{2} + 1\frac{7}{8}) = (6\frac{1}{24} - \frac{16}{24}) : (3\frac{4}{8} + 1\frac{7}{8}) = (5\frac{25}{24} - \frac{16}{24}) : 4\frac{11}{8} = 5\frac{9}{24} : \frac{43}{8} = \frac{129}{24} * \frac{8}{43} = \frac{3}{3} * \frac{1}{1} = 1$
Пожауйста, оцените решение