题目内容

直接写出得数.
3
9
+
5
9
=
7
13
-
3
13
=
1-
2
5
=
1
7
+
5
7
=
4
9
-
1
3
=
1
8
+
5
8
=
1
4
-
1
5
=
2-
5
9
=
4
11
+
3
11
+
2
11
=
1-
3
7
-
2
7
=
3
9
+
5
9
=
8
9
7
13
-
3
13
=
4
13
1-
2
5
=
3
5
1
7
+
5
7
=
6
7
4
9
-
1
3
=
1
9
1
8
+
5
8
=
3
4
1
4
-
1
5
=
1
20
2-
5
9
=1
4
9
4
11
+
3
11
+
2
11
=
9
11
1-
3
7
-
2
7
=
2
7
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