首 页
电子课本网
›
第48页
第48页
信息发布者:
20
36
8
30
3
9
2
8
4
12
3
12
6
8
10
15
18
24
4
7
4
7
3
2
3
2
$\frac {2}{3}=\frac {6}{9},$$\frac {5}{9}=\frac {5}{9}$
$\frac {2}{7}=\frac {16}{56},$$\frac {3}{8}=\frac {21}{56}$
$\frac {7}{9}=\frac {28}{36},$$\frac {11}{12}=\frac {33}{36}$
$\frac {7}{12}=\frac {14}{24},$$\frac {7}{8}=\frac {21}{24}$
3
5
1
3
$\frac 78=\frac {63}{72},$$\frac 79=\frac {56}{72}$
$\frac {62}{72},$$\frac {61}{72},$$\frac {60}{72},$$\frac {59}{72},$$\frac {58}{72},$$\frac {57}{72}$
上一页
下一页