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求未知数x(1)4x-4×12=18(2)36x=543(3)3x+x+6=26(4)15:12=10.25:x.
题目详情
求未知数x
|
(1)4x-4×
| (2)
| (3)3x+x+6=26 | (4)
|
(1)4x-4×
| (2)
| (3)3x+x+6=26 | (4)
|
(1)4x-4×
| (2)
| (3)3x+x+6=26 | (4)
|
(1)4x-4×
| (2)
| (3)3x+x+6=26 | (4)
|
(1)4x-4×
| (2)
| (3)3x+x+6=26 | (4)
|
1 |
2 |
36 |
x |
54 |
3 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
2 |
36 |
x |
54 |
3 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
2 |
1 |
2 |
1 |
2 |
36 |
x |
54 |
3 |
36 |
x |
54 |
3 |
36 |
x |
54 |
3 |
54 |
3 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
2 |
1 |
0.25 |
1 |
0.25 |
▼优质解答
答案和解析
(1)4x-4×
=18,
4x-2=18,
4x-2+2=18+2,
4x=20,
4x÷4=20÷4,
x=5;
(2)
=
,
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)
:
=
:x,
x=
×
,
x=2,
x÷
=2÷
,
x=10.
(1)4x-4×
=18,
4x-2=18,
4x-2+2=18+2,
4x=20,
4x÷4=20÷4,
x=5;
(2)
=
,
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)
:
=
:x,
x=
×
,
x=2,
x÷
=2÷
,
x=10.
(1)4x-4×
=18,
4x-2=18,
4x-2+2=18+2,
4x=20,
4x÷4=20÷4,
x=5;
(2)
=
,
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)
:
=
:x,
x=
×
,
x=2,
x÷
=2÷
,
x=10.
(1)4x-4×
=18,
4x-2=18,
4x-2+2=18+2,
4x=20,
4x÷4=20÷4,
x=5;
(2)
=
,
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)
:
=
:x,
x=
×
,
x=2,
x÷
=2÷
,
x=10.
1 2 1 1 1 2 2 2 =18,
4x-2=18,
4x-2+2=18+2,
4x=20,
4x÷4=20÷4,
x=5;
(2)
=
,
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)
:
=
:x,
x=
×
,
x=2,
x÷
=2÷
,
x=10.
36 x 36 36 36 x x x =
,
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)
:
=
:x,
x=
×
,
x=2,
x÷
=2÷
,
x=10.
54 3 54 54 54 3 3 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)
:
=
:x,
x=
×
,
x=2,
x÷
=2÷
,
x=10.
1 5 1 1 1 5 5 5 :
=
:x,
x=
×
,
x=2,
x÷
=2÷
,
x=10.
1 2 1 1 1 2 2 2 =
:x,
x=
×
,
x=2,
x÷
=2÷
,
x=10.
1 0.25 1 1 1 0.25 0.25 0.25 :x,
x=
×
,
x=2,
x÷
=2÷
,
x=10.
1 5 1 1 1 5 5 5 x=
×
,
x=2,
x÷
=2÷
,
x=10.
1 2 1 1 1 2 2 2 ×
,
x=2,
x÷
=2÷
,
x=10.
1 0.25 1 1 1 0.25 0.25 0.25 ,
x=2,
x÷
=2÷
,
x=10.
1 5 1 1 1 5 5 5 x=2,
x÷
=2÷
,
x=10.
1 5 1 1 1 5 5 5 x÷
=2÷
,
x=10.
1 5 1 1 1 5 5 5 =2÷
,
x=10.
1 5 1 1 1 5 5 5 ,
x=10.
(1)4x-4×
4x-2=18, 4x-2+2=18+2, 4x=20, 4x÷4=20÷4, x=5; (2)
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)
x=10. |
(1)4x-4×
1 |
2 |
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 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
(1)4x-4×
1 |
2 |
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 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
(1)4x-4×
1 |
2 |
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 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
(1)4x-4×
1 |
2 |
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 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
1 |
2 |
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 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
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 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
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 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
1 |
0.25 |
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
1 |
5 |
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
1 |
2 |
1 |
0.25 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
1 |
0.25 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
1 |
5 |
1 |
5 |
1 |
5 |
x=10.
1 |
5 |
1 |
5 |
x=10.
1 |
5 |
x=10.
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