问题 解答题
解方程.
2
3
4
5
=
3
8

x+
1
5
x=36

1
3
x+
2
3
=
6
9
答案

(1)

2
3
4
5
=
3
8

    

2
3
4
5
×
4
5
=
3
8
×
4
5

           

2
3
x=
3
10

       

2
3
2
3
=
3
10
÷
2
3

             x=

9
20

(2)x+

1
5
x=36

      

6
5
x=36

   

6
5
6
5
=36÷
6
5

         x=30;

(3)

1
3
x+
2
3
=
6
9

1
3
x+
2
3
-
2
3
=
6
9
-
2
3

     

1
3
x=0

 

1
3
1
3
=0÷
1
3

       x=0.

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