题目内容
解下列方程:
(1)4x=3x-4;
(2)-
x=
;
(3)5x-2(x-1)=14;
(4)
-
=1.
(1)4x=3x-4;
(2)-
| 3 |
| 2 |
| 1 |
| 3 |
(3)5x-2(x-1)=14;
(4)
| 1-2x |
| 3 |
| x+1 |
| 6 |
(1)4x=3x-4,
4x-3x=-4,
x=-4;
(2)-
x=
,
-9x=2,
x=-
;
(3)5x-2(x-1)=14,
5x-2x+2=14,
3x=12,
x=4;
(4)
-
=1,
2-4x-x-1=6,
-5x=5,
x=-1.
4x-3x=-4,
x=-4;
(2)-
| 3 |
| 2 |
| 1 |
| 3 |
-9x=2,
x=-
| 2 |
| 9 |
(3)5x-2(x-1)=14,
5x-2x+2=14,
3x=12,
x=4;
(4)
| 1-2x |
| 3 |
| x+1 |
| 6 |
2-4x-x-1=6,
-5x=5,
x=-1.
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