Mixed numbers to improper 2
4
4
7
=
2
1
5
=
3
2
6
=
5
1
3
=
2
4
9
=
2
4
5
=
2
1
7
=
3
3
8
=
2
3
4
=
5
10
2
=
参加了这次测试的学生也参加了 :

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