第67页

信息发布者:
2100
11
7.52
1.3
266
380
$\frac{7}{12}$
1
$\frac{5}{3}$
$\frac{40}{3}$
30
100
=450-103
=347
=5.8+4.4
=10.2
=25×4×0.8×125
=100×100
=10000
​$=\frac {1}{12}×(\frac {25}{49}+\frac {23}{49})$​
​$=\frac {1}{12}×\frac {48}{49}$​
​$=\frac {4}{49}$​
=7+12
=19
​$=\frac {3}{4}÷\frac {9}{20}$​
​$=\frac {5}{3}$​
解:​$\frac {5}{12}x=\frac {5}{8}$​
​$x=\frac {3}{2}$​
解:​$4x=\frac {5}{7}×\frac {7}{15}$​
​$4x=\frac {1}{3}$​
​$x=\frac {1}{12}$​
解:​$0.5x=5.2-3.5$​
​$0.5x=1.7$​
​$x=3.4$​