(1)
1
4 x+3=7,
1
4 x+3-3=7-3,
1
4 x ÷
1
4 =4 ÷
1
4 ,
x=16;
(2)(
2
3 -
1
2 )x=
1
3 ,
1
6 x=
1
3 ,
1
6 x ÷
1
6 =
1
3 ÷
1
6 ,
x=2;
(3)25%x:5=0.2,
25%x=1,
25%x÷25%=1÷25%,
x=4;
(4)x-
3
5 x=
3
5 ×
2
9 ,
2
5 x=
2
15 ,
2
5 x ÷
2
5 =
2
15 ÷
2
5 ,
x=
1
3 ;
(5)16x+1.5×4=16,
16x+6-6=16-6,
16x÷16=10÷16,
x=
5
8 ;
(6)5-
5
6 x=
1
3 ,
5-
5
6 x +
5
6 x=
1
3 +
5
6 x,
5-
1
3 =
1
3 +
5
6 x-
1
3 ,
14
3 ÷
5
6 =
5
6 x ÷
5
6 ,
x=5.6.