题目内容

求未知数x
2
3
:x=
3
4
x:0.2=3.8x:
2
7
=0.4
9:x=
1
6
5
8
:x=
13
4
0.6:x=
3
5
(1)
2
3
:x=
3
4

3
4
x=
2
3

3
4
3
4
=
2
3
÷
3
4

x=
8
9


(2)x:0.2=3.8
x=0.2×3.8
x=0.76;

(3)x:
2
7
=0.4
x=
2
7
×
0.4
x=
4
35


(4)9:x=
1
6

1
6
x=9
1
6
1
6
=9÷
1
6

x=54;

(5)
5
8
:x=
13
4

13
4
x=
5
8

13
4
13
4
=
5
8
÷
13
4

x=
5
26


(6)0.6:x=
3
5

3
5
x=0.6
3
5
3
5
=0.6÷
3
5

x=1.
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