题目内容
解方程:
+x=
x-
=1.
| 8 |
| 15 |
| 9 |
| 15 |
x-
| 3 |
| 8 |
(1)
+x=
,
+x-
=
-
,
x=
;
(2)x-
=1,
x-
+
=1+
,
x=1
.
| 8 |
| 15 |
| 9 |
| 15 |
| 8 |
| 15 |
| 8 |
| 15 |
| 9 |
| 15 |
| 8 |
| 15 |
x=
| 1 |
| 15 |
(2)x-
| 3 |
| 8 |
x-
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
x=1
| 3 |
| 8 |
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