3 log 81 + 3 log 243 - 3 log 27

3 log 81 + 3 log 243 - 3 log 27
= 4 + 5 - 3
= 6

3log81+3log243-3log27
=3log(3^4)+3log(3^5)-3log(3^3)
=4*3log3+5*3log3-3*3log3
=4+5-3
=6

^ dibaca pangkat, * tanda perkalian, 3log3=1