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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決 
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我有些數學問題 求解答(要算式
Oct 26th 2013, 07:23

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1. 2.5×16÷7.5=口，口=5.333333333333333333333 2. 2又2分之1 ×18又5分之2÷5=口，口=9.2 算法如下: A:B=C:D 求A，B×C÷D 求B，A ×D÷C 內內外外...
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