Tolong sama caranya yaa

4 log 6 = m
10 log 4 = n

12 log 60 = log 60/log 12
= log 6 x 10/log 6 x 2
= 4 log 6 + 4 log 10/4 log 6 + 4 log 2
= (m + (1/n))/(m+1/2)
= ((mn+1)/n)/(2m+1)/2)
= (mn+1/n) x 2/(2m+1)
= 2mn +2/2mn + n

jawabannya yg A