Question

Помогите срочно. Задание на фото

Answer 1

$1)( frac{5}{7} times 2 frac{1}{3} times frac{5}{6} - 1) div (1 - frac{7}{8} \ times 1 frac{3}{5} times frac{3}{14} ) = frac{5}{9}$
$1) frac{5}{7} times 2 frac{1}{3} = frac{5}{7} times frac{7}{3} = frac{5}{3}$
$2) frac{5}{3} times frac{5}{6} = frac{25}{18} = 1 frac{7}{18}$
$3)1 frac{7}{18} - 1 = frac{7}{18}$
$4) frac{7}{8} times 1 frac{3}{5} = frac{7}{8} times frac{8}{5} = frac{7}{5}$
$5) frac{7}{5} times frac{3}{14} = frac{3}{10}$
$6)1 - frac{3}{10} = frac{10}{10} - frac{3}{10} = frac{7}{10}$
$7) frac{7}{18} div frac{7}{10} = frac{7}{18} times frac{10}{7} = frac{10}{18} = frac{5}{9}$
2)
$(8 frac{7}{15} - 3 frac{3}{4} + 4 frac{2}{5} - 8 frac{7}{60} ) div (4 frac{1}{4} \ - 2 frac{3}{4} ) = frac{2}{3}$
$1)8 frac{7}{15} - 3 frac{3}{4} = 8 frac{28}{60} - 3 frac{45}{60} = \ 7 frac{88}{60} - 3 frac{45}{60} = 4 frac{43}{60}$
$2)4 frac{43}{60} + 4 frac{2}{5} = 4 frac{43}{60} + 4 frac{24}{60} = \ 8 frac{67}{60} = 9 frac{7}{60}$
$3)9 frac{7}{60} - 8 frac{7}{60} = 1$
$4)4 frac{1}{4} - 2 frac{3}{4} = 3 frac{5}{4} - 2 frac{3}{4} = 1 frac{2}{4} = 1 frac{1}{2}$
5)
$1 div 1 frac{1}{2} = 1 times frac{2}{3} = frac{2}{3}$
Остальные примеры на фото