Mathematics
Junior High
この線の部分が分かりません。なぜあまりが-1になるのか、🥲
ーオ+3y+ xメ-3) %3 (-x+lxy) (3y-3)
=x(-1+ y) + 3(y-1)
=x{y-1)+3(y-1)
=(x+3)(y-1)
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ありがとうございます☺️できそうです!