问题 解答题
3
5
-
1
6
+
1
2
4
9
+
5
7
+
5
9
1-
3
8
-
5
8
3
7
+
1
2
-
3
14
4
5
-(
1
2
-
3
10
)
1
2
+
1
4
+
1
8
+
1
16
答案

3
5
-
1
6
+
1
2

=

13
30
+
15
30

=

14
15

4
9
+
5
7
+
5
9

=

4
9
+
5
9
+
5
7

=1+

5
7

=1

5
7

1-

3
8
-
5
8

=

5
8
-
5
8

=0;

3
7
+
1
2
-
3
14

=

6
14
+
7
14
-
3
14

=

5
7

4
5
-(
1
2
-
3
10
)

=

4
5
-
1
5

=

3
5
1
2
+
1
4
+
1
8
+
1
16

=

8
16
+
4
16
+
2
16
+
1
16

=

15
16

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