20.07×1933-19.93×2007(简便运算)
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20.07×1933-19.93×2007(简便运算)
![20.07×1933-19.93×2007(简便运算)](/uploads/image/z/13889195-35-5.jpg?t=20.07%C3%971933%EF%BC%8D19.93%C3%972007%28%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%29)
20.07×1933-19.93×2007
=2007×19.33-19.93×2007
=2007×(19.33-19.93)
=2007×(-0.6)
=-1204.2
再问: 20.07×1933-19.93×2007 =2007×19.33-19.93×2007 =2007×(19.33-19.93) =2007×(-0.6) =-1204.2 中的=2007×(-0.6)什么意思啊、 ?
=2007×19.33-19.93×2007
=2007×(19.33-19.93)
=2007×(-0.6)
=-1204.2
再问: 20.07×1933-19.93×2007 =2007×19.33-19.93×2007 =2007×(19.33-19.93) =2007×(-0.6) =-1204.2 中的=2007×(-0.6)什么意思啊、 ?