2log24 - 2log9 + 2log6

2 log2^3.3 / 2log 3^2 x log 2 . 3
2 log2^3+1 + 2 log 3^1-2+1
2 log2^4 + 2 log 3^0
4 . 2 log 2 + 2 log 1
4 . 1 + 0
4

jadi jawabannya 4 :)
*semoga membantu* :)