题目内容

脱式计算,能简算的要简算
3
4
+
5
6
+
7
9
11
6
-
11
12
-
1
8
3
5
+(
3
4
-
1
6
)
7
12
-
3
8
+
2
3
23
12
-
7
8
-
5
6
4
1
2
-
1
2
-
3
8
+
7
8
(1)
3
4
+
5
6
+
7
9

=
27
36
+
30
36
+
28
36

=
85
36


(2)
11
6
-
11
12
-
1
8

=
44
24
-
22
24
-
3
24

=
19
24


(3)
3
5
+(
3
4
-
1
6
),
=
3
5
+
7
12

=
71
60


(4)
7
12
-
3
8
+
2
3

=
14
24
-
9
24
+
16
24

=
7
8


(5)
23
12
-
7
8
-
5
6

=
46
24
-
21
24
-
20
24

=
5
24


(6)4
1
2
-
1
2
-
3
8
+
7
8

=4+(
7
8
-
3
8
),
=4+
1
2

=4
1
2
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