问题 解答题
直接写得数.
3
4
×
2
3
÷
3
4
=
3
7
+
3
11
=
1
2
×
1
3
÷
1
2
×
1
3
=
4
5
-1÷
4
5
=
(
4
5
+
1
5
1
3
=
12×(
1
2
+
1
3
)
=
5
6
-(
1
2
+
1
6
)
=
答案

3
4
×
2
3
÷
3
4
=
2
3

3
7
+
3
11
=
3
11

1
2
×
1
3
÷
1
2
×
1
3
=
1
9

4
5
-1÷
4
5
=0
(
4
5
+
1
5
1
3
=3
12×(
1
2
+
1
3
)
=10
5
6
-(
1
2
+
1
6
)
=
1
6

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