Question

Сделайте плис надо сделать даю 34 балла

Answer 1

2)$8 \div \frac{3}{5} = \frac{40}{3} = 13 \frac{1}{3} = 13.3333$
$\frac{4}{7} \div 3 = \frac{4}{21}$
$14 \div \frac{14}{23} = \frac{14 \times 23}{14} = 23$
$3 \div \frac{13}{18} = \frac{3 \times 18}{13} = \frac{54}{13} = 4 \frac{2}{13}$
$1 \frac{1}{25} \div 2 \frac{4}{7} = \frac{26}{25} \div \frac{18}{7} = \frac{26 \times 7}{25 \times 18} = \\ = \frac{182}{450} = \frac{91}{225} = 0.404444$
3)
$3 \div \frac{1}{5} = 15$
$3 \div \frac{1}{8} = 24$
4)
$2x = \frac{4}{9} \\ x = \frac{4}{9} \div 2 = \frac{2}{9}$
$\frac{1}{2} x = 4 \\ x = 4 \div \frac{1}{2} = 8$
$\frac{3}{13} x = 1 \\ x = 13$
$\frac{4}{9} \div x = 1 \\ x = \frac{4}{9} \times 1 = \frac{4}{9}$
$4 \frac{5}{17} \div x = 4 \frac{5}{17} \\ x = 1$
5)
$\frac{35}{12} = \frac{70}{24 } \\ \frac{7}{24} \times 10 = \frac{70}{24}$
в 10 раз
6)
$1 \frac{4}{5} \div 18 = \frac{9}{5} \div 18 = \frac{9}{5 \times 18} = \frac{1}{10}$
7)
$\frac{9}{25} \div \frac{20}{27} \div \frac{3}{8} = \frac{9 \times 27 \times 8}{25 \times 20 \times 3} = 1296$
$(\frac{1}{2} + \frac{1}{3} ) \div ( \frac{1}{2} - \frac{1}{3} ) = \frac{5}{6} \div \frac{1}{6} = 5$