CQ5556
幼苗
共回答了16个问题采纳率:100% 举报
(1)
6
5 ×
6
7 -
6
7 ÷5,
=
6
5 ×
6
7 -
6
7 ×
1
5 ,
=
6
7 ×(
6
5 -
1
5 ),
=
6
7 ×1,
=
6
7 ;
(2)4-
9
15 ÷
9
5 -
2
3 ,
=4-
1
3 -
2
3 ,
=4-(
1
3 +
2
3 ),
=4-1,
=3;
(3)(
3
4 -
1
10 ÷2)×
5
14 ,
=(
3
4 -
1
20 )×
5
14 ,
=
14
20 ×
5
14 ,
=
1
4 ;
(4)
3
4 ×
5
12 +
5
12 ×
5
4 ,
=
5
12 ×(
3
4 +
5
4 ),
=
5
12 ×2,
=
5
6 .
1年前
1