(1)14×75-624÷39
=150×7-208÷13,
=1050-16,
=1034;
(2)(7.6-3.6÷2)×1.5
=(7.6-1.8)×1.5,
=5.8×1.5,
=8.7;
(3)
4
5 -
1
3 ÷
7
15
=
4
5 -
1
3 ×
15
7 ,
=
4
5 -
5
7 ,
=
3
35 ;
(4)
5
7 ÷9+
4
7 ×
1
9
=
5
7 ×
1
9 +
4
7 ×
1
9 ,
=(
5
7 +
4
7 )×
1
9 ,
=
9
7 ×
1
9 ,
=
1
7 ;
(5)
2
3 +(
5
6 -
3
4 ) ÷
3
8
=
2
3 +
1
12 ×
8
3 ,
=
2
3 +
2
9 ,
=
8
9 ;
(6)
7
11 ÷[
2
5 -(1-
7
10 )]
=
7
11 ÷[
2
5 -
3
10 ],
=
7
11 ÷
1
10 ,
=
7
11 × 10,
=
70
11 .