问题 解答题
直接写出得数:
1
3
+
1
4
=
3
5
-
1
5
=
3
7
+
2
7
=
1
6
+
1
3
=
1-
3
8
=
1
4
-
1
5
=
1
8
+
3
4
=
6
7
-
4
7
=
5
11
+
4
11
+
2
11
=
3
7
+
4
7
-
2
5
=
答案

1
3
+
1
4
=
7
12
3
5
-
1
5
=
2
5
3
7
+
2
7
=
5
7
1
6
+
1
3
=
1
2
1-
3
8
=
5
8
1
4
-
1
5
=
1
20
1
8
+
3
4
=
7
8
6
7
-
4
7
=
2
7
5
11
+
4
11
+
2
11
=1,
3
7
+
4
7
-
2
5
=
3
5
故答案为:
7
12
2
5
5
7
1
2
5
8
1
20
7
8
2
7
,1,
3
5

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