Tính giá trị biểu thức A=(4,57 : 3,27 + 5,232 : 3,27) x 4,08 -4,08 60đ ai lm đc thì lm xong đầu + đúng = hay nhất xong bét + đúng = 5*+1 tim xong bét + sai = ăn bc + 1*

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