Question

помогите пожалуйста !​

Answer 1

1)

$9 : \frac{3}{4} = \frac{9}{1} * \frac{4}{3} = 3*4 = 12$

2)

$2 : \frac{8}{17} = \frac{2}{1} * \frac{17}{8} = \frac{17}{4} = 4 \frac{1}{4} = 4,25$

3)

$\frac{9}{16} : 36 = \frac{9}{16} * \frac{1}{36} = \frac{1}{16*4} = \frac{1}{64}$

4)

$2 \frac{13}{16} : 4\frac{3}{8} = \frac{45}{16} * \frac{8}{35} = \frac{9}{2*7} = \frac{9}{14}$

5)

$3 \frac{1}{3} : 2 \frac{6}{7} = \frac{10}{3} * \frac{7}{20} = \frac{7}{6}$

6)

$3 \frac{6}{7} : \frac{9}{28} = \frac{27}{7} * \frac{28}{9} = 3*4 = 12$

1)

$2 \frac{2}{3} : \frac{2}{9} : \frac{1}{4} = \frac{8}{3} * \frac{9}{2} : \frac{1}{4} = \frac{4*3}{1} * \frac{4}{1} = 12 * 4 = 48$

2)

$2 \frac{2}{3} : (\frac{2}{9} : \frac{1}{4}) = \frac{8}{3} : (\frac{2}{9} * \frac{4}{1}) = \frac{8}{3} : \frac{8}{9} = \frac{8}{3} * \frac{9}{8} = 3$

3)

$(4\frac{5}{12} - 3\frac{13}{24}) : 1\frac{3}{4} + \frac{5}{6} : \frac{5}{7} = \\(4\frac{10}{24} - 3\frac{13}{24}) : \frac{7}{4} + \frac{5}{6} * \frac{7}{5} =\\\frac{21}{24} * \frac{4}{7} + \frac{7}{6} = \\\frac{3}{6} + \frac{7}{6} = \frac{10}{6} = 1\frac{4}{6} = 1\frac{2}{3}$

4)

$(7\frac{5}{7} : 3\frac{3}{5} - \frac{1}{7}) * 1 \frac{5}{28} =\\(\frac{54}{7} * \frac{5}{18} - \frac{1}{7}) * 1 \frac{5}{28} =\\\\(\frac{15}{7} - \frac{1}{7}) * 1 \frac{5}{28} =\\\\2 * \frac{33}{28} = \frac{66}{28} = 2\frac{10}{28} = 2\frac{5}{14}$