题目内容
解方程:
x+
| x-(
|
|
(1)x+
=1,
x+
-
=1-
,
x=
,
(2)x-(
+
)=
,
x-
=
,
x-
+
=
+
,
x=
,
(3)
+x=
,
+x-
=
-
,
x=
.
| 5 |
| 9 |
x+
| 5 |
| 9 |
| 5 |
| 9 |
| 5 |
| 9 |
x=
| 4 |
| 9 |
(2)x-(
| 3 |
| 14 |
| 4 |
| 7 |
| 1 |
| 2 |
x-
| 11 |
| 14 |
| 1 |
| 2 |
x-
| 11 |
| 14 |
| 11 |
| 14 |
| 1 |
| 2 |
| 11 |
| 14 |
x=
| 9 |
| 7 |
(3)
| 3 |
| 4 |
| 7 |
| 8 |
| 3 |
| 4 |
| 3 |
| 4 |
| 7 |
| 8 |
| 3 |
| 4 |
x=
| 1 |
| 8 |
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