Mathematics
Senior High

この式の途中式を教えて頂けないでしょうか??🥺
答えと合わなくて、、😞
宜しくお願いします🙇🏽‍♀️

界 *“十2ァー21ヶ十18 =ー(ァ一1)(ァー3)(ヶ土ん) _-

Answers

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