Question

$(73.6 - 72 \frac{5}{9}) \div 6 \frac{4}{15} + \frac{7}{13} \times (20 \frac{2}{3} - 1 \frac{3}{7)}$
пожалуйста срочно​

Answer 1

Объяснение:

$(73.6 - 72 \frac{5}{9}) \div 6 \frac{4}{15} + \frac{7}{13} \times (20 \frac{2}{3} - 1 \frac{3}{7}) = (73 \frac{3}{5} - 72 \frac{5}{9}) \div \frac{94}{15} + \frac{7}{13} \times (20 \frac{14}{21} - 1 \frac{9}{21}) = (73 \frac{27}{45} - 72 \frac{25}{45}) \times \frac{15}{94} + \frac{7}{13} \times 19 \frac{5}{21} = 1 \frac{2}{45} \times \frac{15}{94} + \frac{7}{13} \times 19 \frac{5}{21} = \frac{47}{45} \times \frac{15}{94} + \frac{7}{13} \times \frac{404}{21} = \frac{1}{6} + \frac{404}{39} = \frac{13}{78} + \frac{808}{78} = \frac{821}{78} = 1 \frac{41}{78}$