2010/(2008+2008/2009)
=2010*2009/(2008+2008*2009)
=2010*2009/2008*2010
=2009/2008
簡便計算2010/(2008+2008/2009)
簡便計算2010/(2008+2008/2009)
數(shù)學(xué)人氣:141 ℃時間:2020-03-24 03:55:31
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