题目内容
解下列方程.
-
+x=1
x+
+
=1
+x=
x-
=
.
| 14 |
| 15 |
| 4 |
| 5 |
x+
| 1 |
| 5 |
| 3 |
| 20 |
| 4 |
| 5 |
| 14 |
| 15 |
x-
| 1 |
| 6 |
| 1 |
| 2 |
(1)
| 14 |
| 15 |
| 4 |
| 5 |
| 2 |
| 15 |
| 2 |
| 15 |
| 2 |
| 15 |
| 2 |
| 15 |
x=
| 13 |
| 15 |
(2)x+
| 1 |
| 5 |
| 3 |
| 20 |
x+
| 7 |
| 20 |
x+
| 7 |
| 20 |
| 7 |
| 20 |
| 7 |
| 20 |
x=
| 13 |
| 20 |
(3)
| 4 |
| 5 |
| 14 |
| 15 |
| 4 |
| 5 |
| 4 |
| 5 |
| 14 |
| 15 |
| 4 |
| 5 |
x=
| 2 |
| 15 |
(4)x-
| 1 |
| 6 |
| 1 |
| 2 |
x-
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 2 |
| 1 |
| 6 |
x=
| 2 |
| 3 |
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