27448
23
830
16284
10
629
28543
6
524
9018
8
367
16599
10
329
8107
4
326
12151
6
308
7168
3
252
12314
0
236
4945
6
216
6540
5
210
10544
5
200
4859
16
197
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Keyword(s): 1次方程式