迷恋人间
春芽
共回答了26个问题采纳率:88.5% 举报
(1)
10
11 -x=
2
3
x=
10
11 -
2
3
x=
30
33 -
22
33
x=
8
33 ;
(2)x+2
7
12 =4.25
x=4.25-2
7
12
x=4
3
12 -2
7
12
x=3
15
12 -2
7
12
x=1
2
3 ;
(3)x-(1
2
3 +
1
6 )=4.5
x-(1
4
6 +
1
6 )=4.5
x-1
5
6 =4.5
x=4.5+1
5
6
x=4
1
2 +1
5
6
x=4
3
6 +1
5
6
x=6
1
3 ;
(4)37.5+
1
5 +x=69
1
2
37.5+0.2+x=69.5
37.7+x=69.5
x=69.5-37.7
x=31.8.
1年前
3