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第67页

信息发布者：

$2\frac {2}{5}$

$\frac {2}{7}$

$\frac {39}{50}$

$\frac {7}{20}$

$2\frac {1}{2}$

0.59

4.125

0.833

$\frac {2}{9}=\frac {22}{99}，$

$\frac {3}{11}=\frac {27}{99}$

$\frac {22}{99}<\frac {27}{99}，$

$\frac {2}{9}<\frac {3}{11}$

$\frac {3}{4}=\frac {42}{56}，$$\frac {6}{7}=\frac {48}{56}，$

$\frac {7}{8}=\frac {49}{56}$

$\frac {42}{56}＜\frac {48}{56}<\frac {49}{56}，$

$\frac {3}{4}＜\frac {6}{7}<\frac {7}{8}$

$\frac {5}{8}=\frac {15}{24}，$

$\frac {7}{12}=\frac {14}{24}$

$\frac {15}{24}>\frac {14}{24}，$

$\frac {5}{8}>\frac {7}{12}$