问题 解答题
解方程:
30
7
÷X=
1
14

36-
2
3
X=18;
4X÷
3
4
=
9
2
答案

(1)

30
7
÷x=
1
14

30
7
÷x×x=
1
14
×x,

1
14
x=
30
7

1
14
x×14=
30
7
×14,

x=60;

(2 )36-

2
3
x=18,

36-

2
3
x+
2
3
x=18+
2
3
x,

18+

2
3
x-18=36-18,

2
3
3
2
=18×
3
2

x=27;

(3)4x÷

3
4
=
9
2

4x÷

3
4
×
3
4
=
9
2
×
3
4

4x÷4=

27
8
÷4,

x=

27
32

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