2011x2013×(1/2011x2012十1/2012X2013)怎样计算

问题描述:

2011x2013×(1/2011x2012十1/2012X2013)怎样计算

2011x2013×(1/2011x2012十1/2012X2013)
=2013/2012+2011/2012
=2024/2012
=2
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