2 第一第二题答案
人气:244 ℃ 时间:2020-04-05 19:31:30
解答
第一题(1)4a/c (2)21y/x (3)n的平方/m (4)y/4x
第二题 (1)12a/a-b (2)x-2y/3x的平方+6x (3)x+6/x (4)y-x/x
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