✨ Best Answer ✨
2x+y=2 ····①
-y＋5x=-9 ····②
①より、y=-2x+2 ····③
③を②に代入して、-(-2x+2)+5x=-9
よって、x=-1
①または②にx=-1を代入して、y=4
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✨ Best Answer ✨
2x+y=2 ····①
-y＋5x=-9 ····②
①より、y=-2x+2 ····③
③を②に代入して、-(-2x+2)+5x=-9
よって、x=-1
①または②にx=-1を代入して、y=4
Users viewing this question
are also looking at these questions 😉
ありがとうございます！助かりました！！