问题 解答题
直接写得数.
4
3
÷
3
4
=
1
3
+
1
4
=
2
3
-
1
12
=
12×
2
7
=
8
5
×
9
4
=
7
12
=
17×
2
51
=
4
7
×
1
8
=
答案

4
3
÷
3
4
=
16
9
1
3
+
1
4
=
7
12
2
3
-
1
12
=
7
12
12×
2
7
=
24
7

8
5
×
9
4
=
18
5
7
12
=0 17×
2
51
=
2
3
4
7
×
1
8
=
1
14

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