Найдите значение выражения:
а) $3\frac{1}{2} * 8\frac{1}{3} * \frac{3}{25} * 5 * 6\frac{1}{4} * 16$;
б) $1\frac{1}{24} : 3\frac{1}{8} : \frac{8}{15} * 3\frac{7}{9} * 1\frac{15}{17}$;
в) $68\frac{17}{36} : 8\frac{1}{13}$;
г) $15\frac{7}{24} : 3\frac{7}{120}$.
$3\frac{1}{2} * 8\frac{1}{3} * \frac{3}{25} * 5 * 6\frac{1}{4} * 16 = \frac{7}{2} * \frac{25}{3} * \frac{3}{25} * 5 * \frac{25}{4} * 16 = \frac{7 * 5 * 5 * 3 * 5 * 5 * 5 * 2 * 2 * 2 * 2}{2 * 3 * 5 * 5 * 2 * 2} = \frac{7 * 5 * 5 * 5 * 2}{1} = 7 * 25 * 10 = 175 * 10 = 1750$
$1\frac{1}{24} : 3\frac{1}{8} : \frac{8}{15} * 3\frac{7}{9} * 1\frac{15}{17} = \frac{25}{24} : \frac{25}{8} * \frac{15}{8} * \frac{34}{9} * \frac{32}{17} = \frac{25}{24} * \frac{8}{25} * \frac{15}{8} * \frac{34}{9} * \frac{32}{17} = \frac{1}{1} * \frac{1}{1} * \frac{5}{1} * \frac{1}{9} * \frac{8}{1} = \frac{40}{9} = 4\frac{4}{9}$
$68\frac{17}{36} : 8\frac{1}{13} = \frac{2465}{36} : \frac{105}{13} = \frac{2465}{36} * \frac{13}{105} = \frac{493}{36} * \frac{13}{21} = \frac{6409}{756} = 8\frac{361}{756}$
$15\frac{7}{24} : 3\frac{7}{120} = \frac{367}{24} : \frac{367}{120} = \frac{367}{24} * \frac{120}{367} = \frac{1}{1} * \frac{5}{1} = 5$
Пожауйста, оцените решение