Jika 2+log a – log 3= log 4,maka nilai a yang memenuhi adalah

2 + log a – log 3 = log 4
2 + log (a/3) = log 4
(log a = 10 log a)
10 log 10² + 10 log (a/3) = 10 log 4
10 log (10×a/3) = 10 log 4
10a/3 = 4
10a = 4×3
a = 1,2

Log a= log4+log3-log100
log a=log 12/100
log a=log 0,12
a=0,12