(1)12:7=x:0.3,
7x=12×0.3,
7x=3.6,
x=
18
5 ×
1
7 ,
x=
18
35 ;
(2)60%x÷
6
25 =
5
4 ,
3
5 x=
5
4 ×
6
25 ,
3
5 x=
3
10 ,
x=
3
10 ×
5
3 ,
x=
1
2 .
(1)12:7=x:0.3,
7x=12×0.3,
7x=3.6,
x=
18
5 ×
1
7 ,
x=
18
35 ;
(2)60%x÷
6
25 =
5
4 ,
3
5 x=
5
4 ×
6
25 ,
3
5 x=
3
10 ,
x=
3
10 ×
5
3 ,
x=
1
2 .