Question

7 2/3 + (6-2 4/7) : 2 2/5=?

Answer 1

Ответ:

Пошаговое объяснение:

Answer 2

$7 \frac{2}{3} + (6 - 2 \frac{4}{7} ) \div 2 \frac{2}{5} = 7 \frac{2}{3} + (5 \frac{7}{7} - 2 \frac{4}{7} ) \div \frac{12}{5} = 7 \frac{2}{3} + 3 \frac{3}{7} \times \frac{5}{12} = 7 \frac{2}{3} + \frac{24}{7} \times \frac{5}{12} = 7 \frac{2}{3} + \frac{24 \times 5}{7 \times 12} = 7 \frac{2}{3} + \frac{2 \times 5}{7 \times 1} = 7 \frac{2}{3} + \frac{10}{7} = 7 \frac{2}{3} + 1 \frac{3}{7} = 7 + 1 + \frac{7 \times 2 + 3 \times 3}{21} = 8 \frac{14 + 9}{21} = 8 \frac{23}{21} = 9 \frac{2}{21}$