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MGSM / ある水族館にカタツムリが4匹います。別の水族館にはカタツムリが32匹います。両者の差は、両方の水族館にいる魚の合計数の2倍です。それぞれの水族館に同じ数の魚がい…

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ある水族館にカタツムリが4匹います。別の水族館にはカタツムリが32匹います。両者の差は、両方の水族館にいる魚の合計数の2倍です。それぞれの水族館に同じ数の魚がいるとすると、それぞれの水族館にいる魚は何匹ずつでしょうか?

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