题文
1
2
3
4
①10-9
②11-9
③10-8
④12-9
⑤11-7
⑥11-6
⑦16-8
⑧1-8
⑨12-8
⑩14-8
15-9
14-7
10-1
17-8
5
6
7
8
9
答案