Giải bài toán = cách lập hpt : Hai tổ sản xuất được giao 900 chi tiết máy trong một thời gian quy định. Nhờ tăng năng xuất lao động, tổ một vượt mức 10% và tổ hai vượt mức 25% nên cả hai tổ làm được 1020 chi tiết máy. Tính số chi tiết máy mà mỗi tổ phải sản xuất theo kế hoạch

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