(1)
2
3 -(
5
6 -
3
4 )÷
3
8
=
2
3 -
1
12 ×
8
3
=
2
3 -
2
9
=
4
9 ;
(2)
4
5 ÷[(
1
2 +
2
3 )×
4
7 ]
=
4
5 ÷[
7
6 ×
4
7 ]
=
4
5 ÷
2
3
=
4
5 ×
3
2
=
6
5 ;
(3)(
5
16 ÷
3
4 +
15
16 )×
8
13
=(
5
16 ×
4
3 +
15
16 )×
8
13
=(
5
12 +
15
16 )×
8
13
=
65
48 ×
8
13
=
5
6 ;
(4)[
8
15 -(
4
5 -
3
10 )]×
15
14
=[
8
15 -
1
2 ]×
15
14
=
1
30 ×
15
14
=
1
28 .