题目内容

直接写出的数
3+
3
8
=
1-
5
18
=
3
8
+
1
8
=
5
12
-
1
12
=
1
2
-
1
5
=
6
7
+
3
7
=
1
4
+
5
4
=
1
3
+
1
4
=
8
9
-
1
3
=
4
7
+
3
7
=
3+
3
8
=3
3
8
1-
5
18
=
13
18
3
8
+
1
8
=
1
2
5
12
-
1
12
=
1
3
1
2
-
1
5
=
3
10
6
7
+
3
7
=
9
7
1
4
+
5
4
=
3
2
1
3
+
1
4
=
7
12
8
9
-
1
3
=
5
9
4
7
+
3
7
=1.
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