(1)[(
14
19 -
5
13 )+
5
19 -
8
13 ]÷
11
12 ,
=[
14
19 -
5
13 +
5
19 -
8
13 ]÷
11
12 ,
=[
14
19 +
5
19 -(
5
13 +
8
13 )]÷
11
12 ,
=[1-1]÷
11
12 ,
=0;
(2)34×(
1
17 +
1
13 )×13,
=34×
1
17 ×13+34×
1
13 ×13,
=26+34,
=60;
(3)[1-(
1
2 -
1
4 )]×
2
3 ,
=[1-
1
4 ]×
2
3 ,
=
3
4 ×
2
3 ,
=
1
2 ;
(4)1375+450÷18×25,
=1375+25×25,
=1375+625,
=2000.