题目内容

下面各题怎样算简便就怎样算.
12÷(
1
3
+
3
4
5
9
÷
1
26
+
4
9
×26
9
17
×(51+
17
27
)-
17
27
(2-
9
10
÷
3
5
)÷
5
6
1
6
7
-
1
3
÷
7
12
-
2
7
1
2
×6+
5
6
÷
2
7
)÷
1
10
(1)12÷(
1
3
+
3
4

=12÷
13
12

=11
1
13


(2)
5
9
÷
1
26
+
4
9
×26
=(
5
9
+
4
9
)×26
=1×26
=26;

(3)
9
17
×(51+
17
27
)-
17
27

=
9
17
×51+
9
17
×
17
27
-
17
27

=27+
1
3
-
17
27

=27
1
3
-
17
27

=26
8
27


(4)(2-
9
10
÷
3
5
)÷
5
6

=(2-1
1
2
)÷
5
6

=
1
2
÷
5
6

=
3
5


(5)1
6
7
-
1
3
÷
7
12
-
2
7

=1
6
7
-(
4
7
+
2
7

=1
6
7
-
6
7

=1;

(6)(
1
2
×6+
5
6
÷
2
7
)÷
1
10

=(3+2
11
12
)÷
1
10

=5
11
12
÷
1
10

=59
1
6
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