问题 解答题
3
4
-(
1
5
+
1
3
)×
9
8
2
5
×
3
4
-
1
2
÷4
5
8
×[1÷(
3
4
+
1
3
)]
[
1
6
-(
5
14
-
1
3
)]×
7
9
答案

3
4
-(
1
5
+
1
3
)×
9
8

=

3
4
-
8
15
×
9
8

=

3
4
-
3
5

=

3
20

2
5
×
3
4
-
1
2
÷4

=

3
10
-
1
8

=

7
40

5
8
×[1÷(
3
4
+
1
3
)]

=

5
8
×[1÷
13
12
]

=

5
8
×
12
13

=

15
26

[

1
6
-(
5
14
-
1
3
)]×
7
9

=[

1
6
-
1
42
7
9

=

1
7
×
7
9

=

1
9

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