问题 解答题
解方程
(1)X×
3
4
=
1
2
(2)X÷
5
9
=36
(3)
3
4
1
6
=18.
答案

(1)X×

3
4
=
1
2

3
4
÷
3
4
=
1
2
÷
3
4

x=

2
3

(2)X÷

5
9
=36,

5
9
×
5
9
=36×
5
9

X=20;

(3)

3
4
1
6
=18,

3
4
1
6
×
1
6
=18×
1
6

3
4
x=3,

3
4
3
4
x=3÷
3
4

x=4.

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