(1)3-0.5x=
1
2 ,
3-0.5x+0.5x=
1
2 +0.5x,
3-
1
2 =
1
2 +0.5x-
1
2 ,
2.5÷0.5=0.5x÷0.5,
x=5;
(2)3
1
9 :x=0.5:
9
14 ,
0.5x=3
1
9 ×
9
14 ,
0.5x÷0.5=2÷0.5,
x=4.
(1)3-0.5x=
1
2 ,
3-0.5x+0.5x=
1
2 +0.5x,
3-
1
2 =
1
2 +0.5x-
1
2 ,
2.5÷0.5=0.5x÷0.5,
x=5;
(2)3
1
9 :x=0.5:
9
14 ,
0.5x=3
1
9 ×
9
14 ,
0.5x÷0.5=2÷0.5,
x=4.