简便计算:23456*7889-23457*7888我要的是全过程,简便计算:23456*7889-23457*7888的简便计算过程.从21:19开始!
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简便计算:23456*7889-23457*7888我要的是全过程,简便计算:23456*7889-23457*7888的简便计算过程.从21:19开始!
简便计算:23456*7889-23457*7888
我要的是全过程,简便计算:23456*7889-23457*7888的简便计算过程.
从21:19开始!
简便计算:23456*7889-23457*7888我要的是全过程,简便计算:23456*7889-23457*7888的简便计算过程.从21:19开始!
=23456*(7888+1)-23457*7888
=23456*7888+23456*1-23457*7888
=23456*7888-23457*7888+23456*1
=23456*7888-23457*7888+23456*1
=23456-7888
=15568