Jawabanmu

2014-09-07T18:59:29+07:00
3 log 15 + 3 log 45 - 3 log 25 =
3 log ( 15 x 45 ) - 3 log 25 =
3 log (675) - 3 log 25 =
3 log ( 675/25)=
3 log 27 =
3 log 3^3= 3