题目内容
解方程
x+
| x-
| 4x-
|
(1)x+
=
,
x+
-
=
-
,
x=
;
(2)x-
=
,
x-
+
=
+
,
x=
;
(3)4x-
=
,
4x-
+
=
+
,
4x=1,
x=
.
| 1 |
| 7 |
| 3 |
| 14 |
x+
| 1 |
| 7 |
| 1 |
| 7 |
| 3 |
| 14 |
| 1 |
| 7 |
x=
| 1 |
| 14 |
(2)x-
| 5 |
| 12 |
| 5 |
| 8 |
x-
| 5 |
| 12 |
| 5 |
| 12 |
| 5 |
| 8 |
| 5 |
| 12 |
x=
| 25 |
| 24 |
(3)4x-
| 1 |
| 5 |
| 4 |
| 5 |
4x-
| 1 |
| 5 |
| 1 |
| 5 |
| 4 |
| 5 |
| 1 |
| 5 |
4x=1,
x=
| 1 |
| 4 |
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