(1)3x-
1
3 =
1
6 ,
3x-
1
3 +
1
3 =
1
6 +
1
3 ,
3x=
1
2 ,
3x÷3=
1
2 ÷3,
x=
1
6 ;
(2)x+
1
6 x=42,
7
6 x=42,
7
6 x×
6
7 =42×
6
7 ,
x=36;
(3)x-
1
5 x=32,
4
5 x=32,
4
5 x×
5
4 =32×
5
4 ,
x=40;
(4)
5
16 +
1
4 x=
3
2 ,
5
16 +
1
4 x-
5
16 =
3
2 -
5
16 ,
1
4 x=
19
16 ,
1
4 x×4=
19
16 ×4,
x=
19
4 .