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 ½Æ»s¥N½XOption Explicit
Sub Ex()
    Dim i, Rng As Range, Msg As Boolean, Sht As Variant
     With Worksheets("¤u§@ªí1")
        For i = .Range("A1").End(xlDown).Row To 1 Step -1
            Msg = False
            For Each Sht In Array(Worksheets("¤u§@ªí2"), Worksheets("¤u§@ªí3"))
                Set Rng = Sht.Range(Sht.Range("A1"), Sht.Range("A1").End(xlDown))
                If Not IsError(Application.Match(.Cells(i, "A"), Rng, 0)) Then Msg = True
            Next
            If Msg = False Then .Range("a" & i).Delete xlUp
        Next
    End With
End Sub
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