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1.
7a 10a 18a ab
2.
800+x x+y y-x
3.
⑴2a a-28 ⑵35-x+y
4.
4a+15
5.
7+4a 50a-x b-a÷6
6.
2.68 148.41 6.71 0.2
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05网免费提供各类练习与测试答案,请牢记零五网网址:05W.CC
1.
7a 10a 18a ab
2.
800+x x+y y-x
3.
⑴2a a-28 ⑵35-x+y
4.
4a+15
5.
7+4a 50a-x b-a÷6
6.
2.68 148.41 6.71 0.2
http://m.ksjqmj.com/wunianjidaan/23818.html
推荐访问