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幼苗
共回答了13个问题采纳率:84.6% 举报
(1)4x-4×
1
2 =18,
4x-2=18,
4x-2+2=18+2,
4x=20,
4x÷4=20÷4,
x=5;
(2)
36
x =
54
3 ,
54x=36×3,
54x=108,
54x÷54=108÷54,
x=2;
(3)3x+x+6=26,
4x+6=26,
4x+6-6=26-6,
4x=20,
4x÷4=20÷4,
x=5;
(4)
1
5 :
1
2 =
1
0.25 :x,
1
5 x=
1
2 ×
1
0.25 ,
1
5 x=2,
1
5 x÷
1
5 =2÷
1
5 ,
x=10.
1年前
5