Question

Вычислить 5/7*(21/20-7/30) +16/21:3/7=

Answer 1

Ответ:

$\frac{5}{7}(\frac{21}{20} - \frac{7}{30}) + \frac{16}{21} : \frac{3}{7} = \frac{5}{7}*\frac{21}{20} - \frac{7}{30}*\frac{5}{7} + \frac{16}{21} * \frac{7}{3} = \frac{3}{4} - \frac{1}{6} + \frac{16}{9} = \frac{27}{36} - \frac{6}{36} + \frac{54}{36} = \frac{27-6+54}{36} = \frac{75}{36} = \frac{25}{12} = 2\frac{1}{12}$