Question

ПОМОГИТЕ СРОЧНО НУЖНЫ ОТВЕТЫ​

Answer 1

Ответ:

писала часа 2, надеюсь не просто так))(｡•̀ᴗ-)✧

Пошаговое объяснение:

78

1)

$\frac{5}{7} \div \frac{4}{5} = \frac{5 \times 5}{7 \times 4} = \frac{25}{28}$

2)

$\frac{6}{35} \div \frac{18}{49} = \frac{6 \times 49}{35 \times 18 } = \frac{1 \times 7}{5 \times 3} = \frac{7}{15}$

3)

$\frac{27}{28} \div \frac{9}{56} = \frac{27 \times 56}{28 \times 9} = \frac{3 \times 2}{1 \times 1} = 6$

4)

$\frac{28}{45} \div \frac{63}{40} = \frac{28 \times 40}{45 \times 63} = \frac{4 \times 8}{9 \times 9} = \frac{32}{81}$

79

1)

$6 \div \frac{2}{7} = \frac{6 \times 7}{2} = \frac{3 \times 7}{1} = 21$

2)

$1 \div \frac{8}{19} = \frac{1 \times 19}{8} = \frac{19}{8} = 2 \frac{3}{8}$

3)

$\frac{7}{25} \div 28 = \frac{7 \times 1}{25 \times 28} = \frac{1 \times 1}{25 \times 4} = \frac{1}{100} = </p><p>4)</p><p>[tex]16 \frac{1}{3} \div 5 \frac{5}{6} = \frac{49}{3} \div \frac{35}{6} = \frac{49 \times 6}{3 \times 35} = \frac{7 \times 2}{1 \times 5} = \frac{14}{5} = 2 \frac{4}{5}</p><p>5)</p><p>[tex]2 \frac{2}{3} \div 2 \frac{2}{7} = \frac{8}{3} \div \frac{16}{7} = \frac{8 \times 7}{3 \times 16} = \frac{1 \times 7}{3 \times 2} = \frac{7}{6} = 1 \frac{1}{6}$

6)

$4 \frac{4}{9} \div \frac{5}{27} = \frac{40}{9} \div \frac{5}{27} = \frac{40 \times 27}{9 \times 5} = \frac{8 \times 3}{1 \times 1} = 24$