SOLUTION: ln(5+4x)-ln(3+x)=ln3

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: ln(5+4x)-ln(3+x)=ln3      Log On


   



Question 381416: ln(5+4x)-ln(3+x)=ln3
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
ln(5+4x)-ln(3+x)=ln3
ln(5+4x)/(3+x)=ln3
(5+4x)/(3+x)= 3
(5+4x) = 3(3+x)
5 + 4x = 9 + 3x
5 + x = 9
x = 4