问题 解答题
请你来算一算,能简算的要简算.
11
15
÷[10×(
2
3
+
4
5
)]
3
4
×
8
13
+
5
13
×
3
4
-
3
4
1
4
+
1
6
)÷
1
2
-
2
3
×
1
4
1
3
×
4
5
÷
2
3
2
3
-
1
2
)÷
5
6
1
6
+
7
10
-
4
15
)×30.
答案

(1)

11
15
÷[10×(
2
3
+
4
5
)],

=

11
15
÷[10×
22
15
],

=

11
15
÷
44
3

=

1
20

(2)

3
4
×
8
13
+
5
13
×
3
4
-
3
4

=

3
4
×(
8
13
+
5
13
-1),

=

3
4
×0,

=0;

(3)(

1
4
+
1
6
)÷
1
2
-
2
3
×
1
4

=

5
12
÷
1
2
-
2
3
×
1
4

=

5
6
-
1
6

=

2
3

(4)

1
3
×
4
5
÷
2
3

=

4
15
÷
2
3

=

2
5

(5)(

2
3
-
1
2
)÷
5
6

=

1
6
÷
5
6

=

1
5

(6)(

1
6
+
7
10
-
4
15
)×30,

=

1
6
×30+
7
10
×30-
4
15
×30,

=5+21-8,

=26-8,

=18.

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