问题 解答题
解方程
8
9
X=
1
6
×
16
51
3
4
=
1
2
2
3
1
4
=12.
答案

(1)

8
9
X=
1
6
×
16
51

8
9
9
8
=
1
6
×
16
51
×
9
8

X=

1
17

(2)X÷

3
4
=
1
2

3
4
×
3
4
=
1
2
×
3
4

X=

3
8

(3)

2
3
1
4
=12,

2
3
1
4
×
1
4
=12×
1
4

2
3
X=3,

2
3
3
2
=3×
3
2

X=

9
2

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