Найдите значение выражения.
1) $(\frac{5}{6} - \frac{11}{14}) : \frac{3}{7} =$
а) $\frac{5}{6} - \frac{11}{14} =$
б) $\frac{}{} : \frac{3}{7} =$
2) $16 : 1\frac{11}{13} - 1\frac{1}{4} : \frac{15}{58} =$
а) $16 : 1\frac{11}{13} = 16 : \frac{24}{13} =$
б) $1\frac{1}{4} : \frac{15}{58} =$
в)
3) $(8 - 1\frac{3}{13} : 1\frac{17}{39}) : 5\frac{5}{14} =$
а) $1\frac{3}{13} : 1\frac{17}{39} = \frac{16}{13} : \frac{}{}$
$(\frac{5}{6} - \frac{11}{14}) : \frac{3}{7} = \frac{1}{9}$
а) $\frac{5}{6} - \frac{11}{14} = \frac{5 * 7 - 11 * 3}{42} = \frac{35 - 33}{42} = \frac{2}{42} = \frac{1}{21}$
б) $\frac{1}{21} : \frac{3}{7} = \frac{1}{21} * \frac{7}{3} = \frac{1}{3} * \frac{1}{3} = \frac{1}{9}$
$16 : 1\frac{11}{13} - 1\frac{1}{4} : \frac{15}{58} = 3\frac{5}{6}$
а) $16 : 1\frac{11}{13} = 16 : \frac{24}{13} = 16 * \frac{13}{24} = 2 * \frac{13}{3} = \frac{26}{3} = 8\frac{2}{3}$
б) $1\frac{1}{4} : \frac{15}{58} = \frac{5}{4} * \frac{58}{15} = \frac{1}{2} * \frac{29}{3} = \frac{29}{6} = 4\frac{5}{6}$
в) $8\frac{2}{3} - 4\frac{5}{6} = 8\frac{4}{6} - 4\frac{5}{6} = 7\frac{10}{6} - 4\frac{5}{6} = 3\frac{5}{6}$
$(8 - 1\frac{3}{13} : 1\frac{17}{39}) : 5\frac{5}{14} = 1\frac{1}{3}$
а) $1\frac{3}{13} : 1\frac{17}{39} = \frac{16}{13} : \frac{56}{39} = \frac{16}{13} * \frac{39}{56} = \frac{2}{1} * \frac{3}{7} = \frac{6}{7}$
б) $8 - \frac{6}{7} = 7\frac{7}{7} - \frac{6}{7} = 7\frac{1}{7}$
в) $7\frac{1}{7} : 5\frac{5}{14} = \frac{50}{7} : \frac{75}{14} = \frac{50}{7} * \frac{14}{75} = \frac{2}{1} * \frac{2}{3} = \frac{4}{3} = 1\frac{1}{3}$
Пожауйста, оцените решение
