题目内容

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
=
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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