题目内容

直接写出得数.
8
9
+
1
9
=
16
12
-
5
12
=
1-
3
7
=
1
2
+
1
3
=
7
8
-
3
8
=
4+
5
9
=
9
10
-
1
10
=
5
7
+
2
7
=
14
15
-
4
15
=
2
3
+
1
4
=
8
9
+
1
9
=1,
16
12
-
5
12
=
11
12
1-
3
7
=
4
7
1
2
+
1
3
=
5
6
7
8
-
3
8
=
1
2
4+
5
9
=4
5
9
9
10
-
1
10
=
4
5
5
7
+
2
7
=1,
14
15
-
4
15
=
2
3
2
3
+
1
4
=
11
12
故答案为:1,
11
12
4
7
5
6
1
2
,4
5
9
4
5
,1,
2
3
11
12
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