Question

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Answer 1

Ответ:

1) $\frac{25}{27}$

2) $\frac{5}{8}$

3) $\frac{2}{25}$

4) 16

5) $\frac{8}{9}$

6) $1\frac{1}{5}$

7)$\frac{2}{25}$

Пошаговое объяснение:

1) $\frac{5}{9} :\frac{3}{5} =\frac{5}{9}*\frac{5}{3}=\frac{25}{27}$

2) $\frac{3}{8}:\frac{3}{5} =\frac{3}{8}*\frac{5}{3}=\frac{5}{8}$

3) $\frac{24}{25}:12=\frac{24}{25*12}= \frac{2}{25}$

4) $14:\frac{7}{8}=14*\frac{8}{7} =14*8:7=14:7*8=2*8=16$

5) $\frac{10}{51}:\frac{15}{68} =\frac{10}{51}*\frac{68}{15}=\frac{2*5}{3*17}*\frac{4*17}{3*5}=\frac{2*5}{3}*\frac{4}{3*5}=\frac{2}{3}*\frac{4}{3}=\frac{8}{9}$

6) $\frac{15}{11}*\frac{22}{7}:\frac{25}{7}=\frac{5*3}{11}*\frac{2*11}{7}:\frac{25}{7}=\frac{5*3}{1}*\frac{2}{7}:\frac{25}{7}=\frac{5*3*2}{7}*\frac{7}{25}=\frac{5*3*2}{25}=\frac{3*2}{5}=\frac{6}{5}=1\frac{1}{5}$

7) $\frac{8}{25}:\frac{16}{5}:\frac{5}{4}=\frac{8}{25}*\frac{5}{16}*\frac{4}{5}=\frac{8}{25}*\frac{4}{16}=\frac{8}{25}*\frac{1}{4}=\frac{2}{25}$