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✨ Best Answer ✨

3枚買うと3割引きなので 3x×0.7
残りの2枚は定価なので 2x

3x×0.7+2x=7380
3x×7/10 + 2x =7380
21x+20x=73800
41x=73800
x=1800円

yu

有難う御座います(^^)

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