Question

1.314 Амалдарды орындардар 2) 4 2/3 - 5/9 × 2 4/7 (2 1/7 + 1 2/3) ÷ 5 + 0,8 ×1.25

Answer 1

$2) \ \ 4 \frac{2}{3} - \frac{5}{9} \times 2 \frac{4}{7} \times (2 \frac{1}{7} + 1 \frac{2}{3} ) \div 5 \\ \\ + 0.8 \times 1.25 = \\ \\ \\ \frac{14}{3} - \frac{5}{9} \times \frac{18}{7} \times ( \frac{15}{7} + \frac{5}{3} ) \div 5 + 1 = \\ \\ \\ \frac{14}{3} - \frac{10}{7} \times \frac{80}{21} \times \frac{1}{5} + 1 = \\ \\ \\ \frac{14}{3} - \frac{160}{147} + 1 = \\ \\ \\ \frac{526}{147} + 1 = \\ \\ \\ \frac{673}{147} = 4 \frac{85}{147} .$

Жауап: 673/145 = 4 85/147.