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= 3 log 25 . 3 log 81/3 log 5 + 1/2
= 3 log 5^2 . 4/3 log 5
=2.3 log 5 . 4/3 log 5
=8.3 log 5/3 log 5 =8
= 8 +1/2 = 17/2
sekarang ke penyebut
3 log 36 - 3 log 4 = 3 log 9 = 2
setelah diketahui pembilang dan penyebut maka hasilnya 17/2 . 1/2 = 17/4