问题 解答题
解方程.
(1)
4
5
x
=
3
10

(2)x÷
14
15
=
1
7

(3)
1
2
x
÷
3
4
=
1
3
答案

(1)

4
5
x=
3
10

4
5
5
4
=
3
10
×
5
4

x=

3
8

(2)x÷

14
15
=
1
7

14
15
×
14
15
=
1
7
×
14
15

x=

2
15

(3)

1
2
3
4
=
1
3

1
2
3
4
×
3
4
=
1
3
×
3
4

x=

1
4

单项选择题 A1型题
问答题 简答题