问题 解答题
递等式计算.
8
9
-
1
12
-
5
18

1
2
+
3
4
-
3
10

1-
1
8
-
1
10
-
1
4

1
12
+
1
6
+
1
12
+
1
20

8
9
-
1
6
-
5
12

3
4
-(0.5-
1
3
答案

8
9
-
1
12
-
5
18

=

32
36
-
3
36
-
10
36

=

19
36

1
2
+
3
4
-
3
10

=

10
20
+
15
20
-
6
20

=

19
20

1-

1
8
-
1
10
-
1
4

=1-(

5
40
+
4
40
+
10
40
),

=1-

19
40

=

21
40

1
12
+
1
6
+
1
12
+
1
20

=

1
12
+
1
12
+
1
6
+
1
20

=

20
60
+
3
60

=

23
60

8
9
-
1
6
-
5
12

=

32
36
-
6
36
-
15
36

=

11
36

3
4
-(0.5-
1
3
),

=

3
4
-
1
2
+
1
3

=

7
12

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