题目内容

计算下列各题,能简算的要简算.
5÷(
1
2
+
1
6
)×
2
15
1
2
-
1
3
+
1
4
)×48

6
25
÷9+
6
25
×
8
9
1
2
-
3
7
)×
7
25
+
2
5
(1)5÷(
1
2
+
1
6
)×
2
15

=5×
2
15
÷(
1
2
+
1
6
),
=
2
3
÷(
1
2
+
1
6
),
=
2
3
×
6
4

=1;

(2)(
1
2
-
1
3
+
1
4
)×48
=
1
2
×48-
1
3
×48+
1
4
×48,
=24-16+12,
=20;

(3)
6
25
÷9+
6
25
×
8
9

=
6
25
×
1
9
+
6
25
×
8
9

=
6
25
×
1
9
+
8
9
),
=
6
25
×
1,
=
6
25


(4)(
1
2
-
3
7
)×
7
25
+
2
5

=
1
14
×
7
25
+
2
5

=
1
50
+
2
5

=
21
50
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