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Mathematics, 23.07.2021 03:40 mariakelley15

Trong chuyến tham quan thực tế tại một trang trại chăn nuôi bạn anh hỏi một anh công nhân có số gà bằng số con bò trang trại đang nuôi thì được anh công nhân cười và nói rằng tất cả có 1.200 con và 2.700 chân bạn tính giúp em xem có bao nhiêu con gà bao nhiêu con bò nhé

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