(1)
7
9 -
4
7 ×
3
4 ,
=
7
9 -
3
7 ,
=
22
63 ;
(2)1.2÷(
1
4 -
1
5 ),
=1.2÷
1
20 ,
=1.2×20,
=24;
(3)0.96÷[(3.5+12.5)×0.3],
=0.96÷[16×0.3],
=0.96÷4.8,
=0.2.
(1)
7
9 -
4
7 ×
3
4 ,
=
7
9 -
3
7 ,
=
22
63 ;
(2)1.2÷(
1
4 -
1
5 ),
=1.2÷
1
20 ,
=1.2×20,
=24;
(3)0.96÷[(3.5+12.5)×0.3],
=0.96÷[16×0.3],
=0.96÷4.8,
=0.2.