Tolong jawab plis hitunglah logaritma pakai caranya terima kasih.

3log0,4+3log0,9-3log12 = 3log 0,4x0,9/12
                                          = 3log 0,36/12
                                          =3log 3x10^-2
                                          =3log3 + 3log10^-2
                                          =1-2 3log10
inshaallah :)