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5/11十5x5/11十5/11x5怎么简便

题目详情
5/11十5x5/11十5/11x5怎么简便
▼优质解答
答案和解析
5/11十5x5/11十5/11x5
=5/11(1+5+1/5)
=5/11x31/5
=31/11
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