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4n+18を3n+16で割るとでてきます!

4nと3nに注目すると
3n×1く4nく3n×2
より商は1とわかる

よって4n+18=(3n+16)×1+n+2
n+2は左右の数字を合わせるための数合わせです!

み🧸

なるほど!!
ありがとうございます🙌🏻🙌🏻

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