问题 解答题
计算下面各题(能简算的要简算):
19
14
×9+
19
14
×19

(
1
2
-
1
3
2
5
+
2
3

36×[(
5
6
-
1
3
)÷3]

9
4
÷[(
7
3
-
6
5
3
4
]
答案

19
14
×9+
19
14
×19,

=

19
14
×(9+19),

=

19
14
×28,

=38;

(

1
2
-
1
3
2
5
+
2
3

=

1
6
÷
2
5
+
2
3

=

5
12
+
2
3

=

13
12

36×[(

5
6
-
1
3
)÷3],

=36×[

1
2
÷3],

=36×

1
6

=6;

9
4
÷[(
7
3
-
6
5
3
4
],

=

9
4
÷[
17
15
×
3
4
],

=

9
4
÷
17
20

=

45
17

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