Question

52+(-3)×(n-1)が、どうして-3n+55になるんだろう?

Study at 2009-09-25 17:05:38

 

Answer NO.1

乗算優先、分配法則、結合法則、交換法則、負の数×負の数は正の数、の説明は略します。52+(-3)×(n-1)=52+(-3n+3)=-3n+52+3=-3n+55

At 2009-09-25 17:18:23

 

ありがとうございます

3 Stars at 2009-09-26 13:00:13

 

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