求方程列式，please and thanks.?
回答 (1)
2015-08-26 3:58 pm
✔ 最佳答案
Let n be the original number of glass beads.n ‒ (1/2)n ‒ (1/6)n ‒ (1/7)n = 16
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https://hk.answers.yahoo.com/question/index?qid=20150826074943AA8FI5J