问题 解答题
(1)
4
9
x=
8
27

(2)
5
8
=
1
2
答案

(1)

4
9
x=
8
27

4
9
x÷
4
9
=
8
27
÷
4
9

x=

2
3

(2)

5
8
=
1
2

x÷

5
8
×
5
8
=
1
2
×
5
8

x=

5
16

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