35×79+79+79×64 = = = 怎么样简便计算?只知道答案,
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35×79+79+79×64===怎么样简便计算?只知道答案,35×79+79+79×64===怎么样简便计算?只知道答案,35×79+79+79×64===怎么样简便计算?只知道答案,35×79+7
35×79+79+79×64 = = = 怎么样简便计算?只知道答案,
35×79+79+79×64 = = = 怎么样简便计算?只知道答案,
35×79+79+79×64 = = = 怎么样简便计算?只知道答案,
35×79+79+79×64=79×(35+1+64)=79×100=7900
原式=79X(35+1+64)
=79X100
=7900
提取公因式,公因式为79
原式=79×35+79×1+79×64
=79×(35+1+64)
=79×100=7900
79*(35+1+64)=7900