(1)(
11
12 -
2
3 )÷
11
24
=
1
4 ×
24
11
=
6
11 ;
(2)(1+
7
9 )×18
=1×18+
7
9 ×18
=18+14
=32;
(3)
7
8 ÷
35
36 ×
5
6
=
7
8 ×
36
35 ×
5
6
=
3
4 ;
(4)
4
9 ×
7
15 +
4
9 ×
2
15
=
4
9 ×(
7
15 +
2
15 )
=
4
9 ×
3
5
=
4
15 ;
(5)
5
6 -
4
11 ×
33
32
=
5
6 -
3
8
=
11
24 ;
(6)18÷(
8
9 -
2
3 )
=18÷
2
9
=81.