Question

Помогите 2 пример решить

Answer 1

Ответ:

1 29/47

Пошаговое объяснение:

сначала найдем х и z

$x) \frac{1}{3} (40 \frac{4}{7} - 38 \frac{1}{3} ) \div 2 \frac{5}{7} = \frac{1}{3} (40 \frac{12}{21} - 38 \frac{7}{21} ) \div \frac{19}{7} = \frac{1}{3} \times 2 \frac{5}{21} \div \frac{19}{7} = \frac{1}{3} \times \frac{47}{21} \div \frac{19}{7} = \frac{47 \times 7}{3 \times 21 \times 19} = \frac{47}{3 \times 3 \times 19} = \frac{47}{171}$

$z)(51.4 - 50.8) \times \frac{20}{27} = 0.6 \times \frac{20}{27} = \frac{3 \times 20}{5 \times 27 } = \frac{4}{9}$

теперь посчитаем z/x

$\frac{z}{x} = \frac{ \frac{4}{9} }{ \frac{47}{171} } = \frac{4 \times 171}{9 \times 47} = \frac{4 \times 19}{47} = \frac{76}{47} = 1 \frac{29}{47}$