Выполните действия:
а) $1\frac{1}{3} * (8\frac{2}{3} : 1\frac{4}{9} - 3\frac{3}{8} + 1\frac{5}{8}) - 1\frac{5}{6}$;
б) $(3\frac{1}{15} - 1\frac{1}{15} : 1\frac{3}{5} + \frac{2}{5}) * 2\frac{1}{7} - 1\frac{1}{7}$;
в) $19,6 * 2\frac{1}{2} - (2,0625 - 1\frac{5}{12}) : \frac{1}{8}$;
г) $\frac{5}{16} : 0,125 + 1,456 : \frac{7}{25} + 4,5 * \frac{4}{5}$.
$1\frac{1}{3} * (8\frac{2}{3} : 1\frac{4}{9} - 3\frac{3}{8} + 1\frac{5}{8}) - 1\frac{5}{6} = 1\frac{1}{3} * (\frac{26}{3} * \frac{9}{13} - 3\frac{3}{8} + 1\frac{5}{8}) - 1\frac{5}{6} = 1\frac{1}{3} * (\frac{2}{1} * \frac{3}{1} - 5) - 1\frac{5}{6} = 1\frac{1}{3} - 1\frac{5}{6} = 1\frac{2}{6} - 1\frac{5}{6} = -\frac{3}{6} = -\frac{1}{2}$
$(3\frac{1}{15} - 1\frac{1}{15} : 1\frac{3}{5} + \frac{2}{5}) * 2\frac{1}{7} - 1\frac{1}{7} = (3\frac{1}{15} - \frac{16}{15} * \frac{5}{8} + \frac{2}{5}) * \frac{15}{7} - 1\frac{1}{7} = (3\frac{1}{15} - \frac{2}{3} * \frac{1}{1} + \frac{2}{5}) * \frac{15}{7} - 1\frac{1}{7} = (3\frac{1}{15} - \frac{10}{15} + \frac{6}{15}) * \frac{15}{7} - 1\frac{1}{7} = 2\frac{12}{15} * \frac{15}{7} - 1\frac{1}{7} = \frac{42}{15} * \frac{15}{7} - 1\frac{1}{7} = 6 - 1\frac{1}{7} = 4\frac{6}{7}$
$19,6 * 2\frac{1}{2} - (2,0625 - 1\frac{5}{12}) : \frac{1}{8} = \frac{98}{5} * \frac{5}{2} - (\frac{33}{16} - 1\frac{5}{12}) * \frac{8}{1} = 49 - (\frac{99}{48} - \frac{68}{48}) * \frac{8}{1} = 49 - \frac{31}{48} * \frac{8}{1} = 49 - \frac{31}{6} = 49 - 5\frac{1}{6} = 43\frac{5}{6}$
$\frac{5}{16} : 0,125 + 1,456 : \frac{7}{25} + 4,5 * \frac{4}{5} = \frac{5}{16} : \frac{125}{1000} + \frac{1456}{1000} : \frac{7}{25} + \frac{45}{10} * \frac{4}{5} = \frac{5}{16} * \frac{8}{1} + \frac{182}{125} * \frac{25}{7} + \frac{9}{2} * \frac{4}{5} = \frac{5}{2} * \frac{1}{1} + \frac{26}{5} * \frac{1}{1} + \frac{9}{1} * \frac{2}{5} = 2\frac{1}{2} + 5\frac{1}{5} + 3\frac{3}{5} = 2\frac{5}{10} + 5\frac{2}{10} + 3\frac{6}{10} = 11\frac{3}{10} = 11,3$
Пожауйста, оцените решение
