Question

Решить пример для статистики ответа

Answer 1

$\frac{217}{31} \div 1.75 - (3.5 \div \frac{5}{4} + \frac{7}{2}) + 3.4 \div \frac{17}{8} = \\ \\ = \frac{217 \times 100}{31 \times 175} - ( \frac{35 \times 4}{10 \times 5} + \frac{7}{2} ) + \frac{34 \times 8}{10 \times 17} = \\ \\ = 4 - ( \frac{14}{5} + \frac{7}{2} ) + \frac{8}{5} = \\ \\ = 4 - ( \frac{28}{10} + \frac{35}{10} ) + \frac{16}{10} = \\ \\ = 4 - \frac{63}{10} + \frac{16}{10} = - \frac{7}{10} = - 0.7$