Mathematics
Senior High
Resolved
3つの式の連立方程式のやり方教えて欲しいです🙇🙇
整理すると 1+m+n+2=0,
SOS
51-m+n+26=0,
-8
31+7m-n-58=0C
これを解くと1=-2,m=8, n=-8
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なるほど！！ありがとうございます🥹