Question

(1целая 5/54-11/36)×3целых3/5 ×2целых 2/7-1целая2/7×1целая 5/9. решить по порядку действий​

Answer 1

$(1 \frac{5}{54} - \frac{11}{36} ) \times 3 \frac{3}{5} \times 2 \frac{2}{7} - 1 \frac{2}{7} \times 1 \frac{5}{9}$

1)

$1 \frac{5}{54} - \frac{11}{36} = \frac{59}{54} - \frac{11}{36} = \frac{118}{108} - \frac{33}{108} = \frac{85}{108}$

$\frac{85}{108} \times 3 \frac{3}{5} = \frac{85}{108} \times \frac{18}{5} = \frac{1530}{540} = \frac{17}{6}$

$\frac{17}{6} \times 2 \frac{2}{7} = \frac{17}{6} \times \frac{16}{7} = \frac{272}{42} = \frac{136}{21}$

$1 \frac{2}{7} \times 1 \frac{5}{9} = \frac{9}{7} \times \frac{14}{9} = 2$

$\frac{136}{21} - 2 = \frac{136}{21} - \frac{42}{21} = \frac{94}{21} = 4 \frac{10}{21}$

Ответ:

$4 \frac{10}{21}$