糖醋里脊yy
幼苗
共回答了15个问题采纳率:100% 举报
(1)
1
2 +
1
5 -
1
8 ,
=
7
10 -
1
8 ,
=
23
40 ;
(2)
5
12 +(
1
4 +
7
12 ) ,
=(
5
12 +
7
12 )+
1
4 ,
=1+
1
4 ,
=1
1
4 ;
(3)
15
7 -
1
3 +
6
7 ,
=
15
7 +
6
7 -
1
3 ,
=3-
1
3 ,
=2
2
3 ;
(4)
7
10 -(
1
3 +
1
4 ) ,
=
7
10 -
7
12 ,
=
7
60 ;
(5)
6
7 -
1
6 -
3
10 ,
=
29
42 -
3
10 ,
=
41
105 ;
(6)
13
12 -
1
4 +
11
24 -
3
4 ,
=(
13
12 +
11
24 )-(
1
4 +
3
4 ),
=
37
24 -1,
=
13
24 .
1年前
2