问题 解答题
(1)
7
9
×
3
14
-2x=
1
8

(2)3.2x+
1
4
=6.65

(3)
4
7
x=
3
5
:6.
答案

(1)

7
9
×
3
14
-2x=
1
8

1
6
-2x=
1
8

2x=

1
6
-
1
8

2x÷2=

1
24
÷2,

x=

1
48

(2)3.2x+

1
4
=6.65,

3.2x+

1
4
-
1
4
=6.65-
1
4

3.2x÷3.2=6.4÷3.2,

x=2;

(3)

4
7
:x=
3
5
6,

3
5
x=
4
7
×
6,

3
5
x÷
3
5
=
24
7
÷
3
5

x=5

5
7

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