Mohon bantuannya iya, sama caranya juga

⁶log 108 - ⁶log 54 - ⁶log (1/72) + ⁶log 9
= ⁶log (108.72.9/54)
= ⁶log (1296)
= ⁶log (6⁴)
= 4

6 log 108 – 6 log 54 – 6 log 1/72 + 6 log 9
= 6 log(108/54) – (6 log 1 – 6 log 72) + 6 log 9
= 6 log 2 – 0 + 6 log 72 + 6 log 9
= 6 log (2*72*9)
= 6 log (1296)
= 6 log 6^4
= 4. 6log6
= 4.1
= 4