问题 解答题
计算下列各题.
5÷(
1
2
+
1
6
)×
2
15
1
2
-
1
3
+
1
4
)×48.
答案

(1)5÷(

1
2
+
1
6
)×
2
15

=5÷

2
3
×
2
15

=

15
2
×
2
15

=1;

(2)(

1
2
-
1
3
+
1
4
)×48,

=

1
2
×48-
1
3
×48+
1
4
×48,

=24-16+12,

=20.

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