27446
23
830
16284
10
629
28541
6
524
9012
8
367
16596
10
329
8107
4
326
12149
6
308
7167
3
252
12313
0
236
4942
6
216
6538
5
210
10543
5
200
4856
16
197
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Keyword(s): 1次方程式