第55页

信息发布者：
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①
$\frac{4}{15}$
$5\frac{1}{2}$
$\frac{7}{18}$
$\frac{3}{4}$
$\frac{8}{11}$
2
$\frac{5}{32}$
4
​$ =\frac {1}{9}÷\frac {1}{3}$​
​$ =\frac {1}{3}$​
​$ =\frac {11}{12}×\frac {23}{22}×\frac {19}{46}$​
​$ =\frac {23}{24}×\frac {19}{46}$​
​$ =\frac {19}{48}$​
​$ =\frac {1}{3}×\frac {16}{5}×\frac {7}{12}$​
​$ =\frac {16}{15}×\frac {7}{12}$​
​$ =\frac {28}{45}$​
$解：x=\frac {1}{3}×\frac {4}{5}$
        $x=\frac {4}{15}$
$解：x=\frac {1}{3}×\frac {5}{2}$
        $x=\frac {5}{6}$
$解：x=\frac {5}{16}×\frac {1}{8}$
        $x=\frac {5}{128}$
$解：x=\frac {2}{15}×\frac {9}{4}$
        $x=\frac {3}{10}$
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