题目内容
Ⅹ-
Ⅹ=
．
| 3 |
| 4 |
| 2 |
| 5 |
Ⅹ-
Ⅹ=
，
（1-
）X=
，
X=
，
X÷
=
÷
，
X=
．
| 3 |
| 4 |
| 2 |
| 5 |
（1-
| 3 |
| 4 |
| 2 |
| 5 |
| 1 |
| 4 |
| 2 |
| 5 |
| 1 |
| 4 |
| 1 |
| 4 |
| 2 |
| 5 |
| 1 |
| 4 |
X=
| 8 |
| 5 |
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