Выполните указанные действия:
а) $(1\frac{11}{18} + \frac{13}{24} - 1\frac{13}{36}) * 1\frac{3}{5}$;
б) $\frac{14}{15} * 1\frac{3}{7} + \frac{7}{10} * \frac{3}{14}$;
в) $4\frac{1}{6} * \frac{4}{15} - \frac{7}{18} * 2\frac{2}{3}$;
г) $(1\frac{13}{18} - 2\frac{7}{15} - \frac{4}{45}) * \frac{1}{2}$.
$(1\frac{11}{18} + \frac{13}{24} - 1\frac{13}{36}) * 1\frac{3}{5} = (1\frac{44}{72} + \frac{39}{72} - 1\frac{26}{72}) * \frac{8}{5} = (1\frac{83}{72} - 1\frac{26}{72}) * \frac{8}{5} = \frac{57}{72} * \frac{8}{5} = \frac{57}{9} * \frac{1}{5} = \frac{57}{45} = 1\frac{12}{45}$
$\frac{14}{15} * 1\frac{3}{7} + \frac{7}{10} * \frac{3}{14} = \frac{14}{15} * \frac{10}{7} + \frac{7}{10} * \frac{3}{14} = \frac{2}{3} * \frac{2}{1} + \frac{1}{10} * \frac{3}{2} = \frac{4}{3} + \frac{3}{20} = \frac{80}{60} + \frac{9}{60} = \frac{89}{60} = 1\frac{29}{60}$
$4\frac{1}{6} * \frac{4}{15} - \frac{7}{18} * 2\frac{2}{3} = \frac{25}{6} * \frac{4}{15} - \frac{7}{18} * \frac{8}{3} = \frac{5}{3} * \frac{2}{3} - \frac{7}{9} * \frac{4}{3} = \frac{10}{9} - \frac{28}{27} = \frac{30}{27} - \frac{28}{27} = \frac{2}{27}$
$(1\frac{13}{18} - 2\frac{7}{15} - \frac{4}{45}) * \frac{1}{2} = (1\frac{65}{90} - 2\frac{42}{90} - \frac{8}{90}) * \frac{1}{2} = (1\frac{65}{90} - 2\frac{50}{90}) * \frac{1}{2} = (1\frac{65}{90} - 1\frac{140}{90}) * \frac{1}{2} = -\frac{75}{90} * \frac{1}{2} = -\frac{15}{18} * \frac{1}{2} = -\frac{15}{36}$
Пожауйста, оцените решение
