Question

помогите инфа в закрепе начиная с Д​

Answer 1

д)

$- \frac{5 }{8} \div \frac{3}{4} = - \frac{5}{8} \times \frac{4}{3} = - \frac{5}{2} \times \frac{1}{3} = - \frac{5}{6}$

е)

$- \frac{9}{11} \div ( - \frac{3}{23}) = \frac{9}{11} \times \frac{23}{3} = \frac{69}{11} = 6 \ \frac{3}{11}$

ж)

$\frac{4}{15} \div ( - 2 \ \frac{1}{3} ) = - \frac{4}{15} \times \frac{3}{7} = - \frac{4}{35}$

з)

$\frac{2}{3} \div ( - 8) = - \frac{2}{3} \times \frac{1}{8} = \frac{1}{12}$

и)

$- 5 \div \frac{5}{7} = - 5 \times \frac{7}{5} = - 7$

к)

$3 \ \frac{3}{7} \div ( - \frac{8}{21} ) = - \frac{24}{7} \times \frac{21}{8} = - 9$

л)

$- 1 \ \frac{2}{9} \div ( - 5 \ \frac{1}{3} ) = \frac{11}{9} \times \frac{3}{16} = \frac{11}{48}$

м)

$- 4 \ \frac{2}{7} \div 1 \ \frac{19}{21} = - \frac{30}{7} \times \frac{21}{40} = - \frac{9}{4} = - 2 \ \frac{1}{4}$

н)

$4.2 \div ( - 2 \ \frac{1}{3}) = - \frac{21}{5} \times \frac{3}{7} = - \frac{9}{5} = - 1 \ \frac{4}{5}$

о)

$- \frac{8}{5} \div ( - 0.8) = \frac{8}{5} \times \frac{5}{4} = 2$

п)

$- 5.2 \div 1 \ \frac{2}{5} = - \frac{26}{5} \times \frac{5}{7} = - \frac{26}{7} = - 3 \ \frac{5}{7}$

р)

$3.2 \div ( - \frac{1}{2} ) = - \frac{16}{5} \times 2 = - \frac{32}{5} = - 6 \ \frac{2}{5}$