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baxapenudethuong
2 năm trước
Bài 1:giải bài toán bằng cách lập pt Theo kế hoạch,để hoàn thành 1 đơn hàng,1 tổ may cần may đc 17 chiếc áo 1 ngày.Do làm việc tích cực,mỗi ngày tổ may đc 3 chiếc so với kế hoạch.vì vậy,tổ đã hoàn thành lô hàng sớm hơn dự định 2 ngày và còn thêm đc 8 chiếc áo.Tính số áo mà tổ phải may theo kế hoạch?
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