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)
$1 \div 1 \frac{1}{2} = 1 \times \frac{2}{3} = \frac{2}{3}$
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