第105页

信息发布者:
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2
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15
​$\frac {10}{7}$​
​$\frac {5}{6}$​
​$\frac {1}{8}$​
​$\frac {2}{3}$​
=
2
​$\frac {5}{2}$​
​$\frac {9}{10}$​
​$\frac {5}{3}$​
1
​$\frac {3}{7}$​
$\frac {4}{5}$
​$\frac {1}{45}$​
​$ \frac {3}{2} × \frac {1}{4} = \frac {3}{8}$​
​$ \frac {8}{9} × \frac {3}{4} = \frac {2}{3}$​
​$ $​因为​$a$​和​$b$​互为倒数,所以​$ab=1$​
​$\frac {a}{2}×\frac {b}{3}=\frac {ab}{6}=\frac {1}{6}$​
答:​$\frac {a}{2}×\frac {b}{3}$​的得数是​$\frac {1}{6}。$​