第43页

信息发布者:
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$\frac{11}{12}=\frac{55}{60}$
$\frac{13}{15}=\frac{52}{60}$
$\frac{4}{7}=\frac{20}{35}$
$\frac{9}{35}=\frac{9}{35}$
$\frac{3}{25}=\frac{24}{200}$
$\frac{13}{40}=\frac{65}{200}$
$\frac{5}{6}=\frac{35}{42}$
$\frac{5}{7}=\frac{30}{42}$

​$\frac {5}{6}=\frac {15}{18},$​​$\frac {4}{9}=\frac {8}{18}$​
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​$\frac {4}{5}=\frac {12}{15},$​​$\frac {4}{3}=\frac {20}{15}$​
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$\frac{11}{12}=\frac{66}{72}$
$\frac{3}{8}=\frac{27}{72}$
$\frac{5}{9}=\frac{40}{72}$
$\frac{2}{3}=\frac{40}{60}$
$\frac{3}{4}=\frac{45}{60}$
$\frac{1}{5}=\frac{12}{60}$
$\frac{4}{a}=\frac{4b}{ab}$
$\frac{3}{b}=\frac{3a}{ab}$
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