题目内容

2
9
+
3
9
=
8
12
-
5
12
=
1-
5
6
=
1
2
+
1
3
=
1
2
+
1
5
-
1
4
=
4
3
-
1
8
+
7
12
=
2
9
+
4
5
+
7
9
+
1
5
=
36×(
5
9
-
5
12
)=
2
9
+
3
9
=
5
9
8
12
-
5
12
=
1
4
1-
5
6
=
1
6
1
2
+
1
3
=
5
6
1
2
+
1
5
-
1
4
=
9
20
4
3
-
1
8
+
7
12
=
43
24
2
9
+
4
5
+
7
9
+
1
5
=2,
36×(
5
9
-
5
12
)=5.
故答案为:
5
9
1
4
1
6
5
6
9
20
43
24
,2,5.
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