Question 290830
log(2x) = log(x+9)
You should note that if log(2x) = log(x+9), then
2x = x + 9
2x - x = 9
x = 9
:
If you substitute 9 for x in the original problems, you have:
log(2*9) = log(9+9)
log(18) = log(18), obviously