问题 解答题
直接写得数.
3
11
+
4
11
=
7
12
-
5
12
=
1
3
+
1
6
=
5
12
+
1
6
=
7
10
-
1
2
=
3
4
-
1
2
=
1
3
-
1
4
=
1
2
+
1
5
=
答案

3
11
+
4
11
=
7
11
7
12
-
5
12
=
1
6
1
3
+
1
6
=
1
2
5
12
+
1
6
=
7
12

7
10
-
1
2
=
1
5
3
4
-
1
2
=
1
4
1
3
-
1
4
=
1
12
1
2
+
1
5
=
7
10

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