3 log 5 + 3 log 2 +3 log 4

3 log 5 + 3 log 2 + 3 log 4

Karna 3 log semua, maka dikalikan saja

Sifat logaritma
A log B + A log C = A log B xC

Maka

5 x 2 x 4 = 40

3 log 5 + 3 log 2 + 3 log 4
= 3 log(5×2×4)
= 3 log 40