Mathematics
Junior High
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これの途中式？っていうか計算方法を教えてください！文字式の解き方が全く分かりません。塾がコロナで授業なくなってしまって…( ;´꒳`;)
答えはx=80分の7です！
18一17xミー1+15>z
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![中学3年2次方程式の問題です。
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ありがとうございます！動画見てみます！