题目内容
解方程:2
-x=
+
.
| 1 |
| 3 |
| 7 |
| 9 |
| 6 |
| 5 |
2
-x=
+
,
2
-x+x=
+x,
2
-
=
+x-
,
x=
.
| 1 |
| 3 |
| 7 |
| 9 |
| 6 |
| 5 |
2
| 1 |
| 3 |
| 89 |
| 45 |
2
| 1 |
| 3 |
| 89 |
| 45 |
| 89 |
| 45 |
| 89 |
| 45 |
x=
| 16 |
| 45 |
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| 1 |
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| 7 |
| 9 |
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| 1 |
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| 89 |
| 45 |
| 1 |
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| 89 |
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| 89 |
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| 89 |
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| 16 |
| 45 |