电子课本网 第70页

第70页

信息发布者:
​$ \frac {3}{2}$​
​$ \frac {2}{7}$​
20
​$ \frac {1}{2}$​
​$ \frac {3}{8}$​
​$ \frac {1}{6}$​
​$ \frac {15}{2}$​
0
​$10 ×\frac {4}{5} ×\frac {5}{8}=5($​吨​$)$​
​$36 ×\frac {2}{3} ×\frac {3}{4}=18( $​个​$)$​
解:​$\frac {5}{6}x=\frac {1}{4}$​
​$x=\frac {3}{10}$​
解:​$\frac {2}{9}x=\frac {2}{15}$​
​$x=\frac {3}{5}$​
解:​$\frac {3}{5}x=30$​
​$x=50$​
​$=\frac {2}{13}×(\frac {7}{5}-\frac {2}{5})$​
​$=\frac {2}{13}×1$​
​$=\frac {2}{13}$​
​$=24×(1-\frac {18}{19})$​
​$=24×\frac {1}{19}$​
​$=\frac {24}{19}$​
​$=\frac {5}{7}×(4+\frac {4}{3})$​
​$=\frac {5}{7}×\frac {16}{3}$​
​$=\frac {80}{21}$​