2 log 5 = p 3 log 5 = q 30 log 150 = lagi uh

30 log 150 = 5 log 150 / 5 log 30
5 log 25 + 5 log 6 / 5 log 5 + 5 log 6
2 + 5 log 2 + 5 log 3 / 1 + 5 log 2 + 5 log 3
2 + 1/p + 1/q / 1 + 1/p + 1/q
2+ p+q / pq / 1 + p+q / pq
2+p+q / 1+p+q