Mathematics
Senior High
どうやって解けばいいのですか(>_<)
途中式教えてください💦
整理すると2l+n+4=0,
l-m+n+2=0,1
31+3m+n+18=0
これを解くとl=4, m=-6,n=-120
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ありがとうございます😭✨