Mathematics
Senior High
Solved
なぜ最後に91を引くのですか??
教えてください🙇🏻♀️
ーー・ 21(21 + 1(2・21 +1)
ーュ .6(6+1X2-6+1)
=331! 一91テ3220
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すごくわかりやすいですです!助かりました!ありがとうございます😊