题目内容

下面各题怎样简便就怎样算
15
16
×(
5
6
+
1
2
)+
3
4
1
2
-(
3
4
-
3
5
)÷
7
10
2
3
×
2
7
+
2
3
÷
7
5
24×(
3
4
+
5
6
(1)
15
16
×
5
6
+
1
2
)+
3
4

=
15
16
×(
5
6
+
3
6
)+
3
4

=
15
16
×
8
6
+
3
4

=
5
4
+
3
4

=
8
4

=2;

(2)
1
2
-(
3
4
-
3
5
)÷
7
10

=
1
2
-(
15
20
-
12
20
)÷
7
10

=
1
2
-
3
20
×
10
7

=
1
2
-
3
14

=
7
14
-
3
14

=
2
7


(3)
2
3
×
2
7
+
2
3
÷
7
5

=
2
3
×
2
7
+
2
3
×
5
7

=(
2
7
+
5
7
)×
2
3

=1×
2
3

=
2
3


(4)24×(
3
4
+
5
6
),
=24×
3
4
+24×
5
6

=18+20,
=38.
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