题目列表(包括答案和解析)
| a |
| b |
| a+m |
| b+m |
| 60 |
| x |
| 60+7 |
| x+7 |
| 30 |
| x |
| 30-4 |
| x-4 |
| a |
| b |
| a+m |
| b+m |
| -x |
| x-y |
| 2 |
| x |
| x |
| x-3 |
|
| 6 |
| 5 |
| 6 |
| 5 |
| x+1 |
| x-1 |
| x-1+2 |
| x-1 |
| x-1 |
| x-1 |
| 2 |
| x-1 |
| 2 |
| x-1 |
| x2 |
| x-1 |
| x-1 |
| x+1 |
| 3 |
| 2x-1 |
| x2+1 |
| x2-1 |
| m2+3 |
| m+1 |
| -3y |
| 2x |
| -2a |
| 3b |
| x |
| -2y |
| -a+b |
| -a-b |
| 1 |
| -x+y |
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