SOLUTION: solve 2-3e0.4x=7 solve log5 + log(x-9)= 1 solve ln(x-1) + ln6= ln(3x) just not getting it I have tried my calcular\tor and other methods and it does not match the key

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: solve 2-3e0.4x=7 solve log5 + log(x-9)= 1 solve ln(x-1) + ln6= ln(3x) just not getting it I have tried my calcular\tor and other methods and it does not match the key      Log On


   

Question 741598: solve 2-3e0.4x=7
solve log5 + log(x-9)= 1
solve ln(x-1) + ln6= ln(3x)
just not getting it I have tried my calcular\tor and other methods and it does not match the key
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
solve 2-3e0.4x=7
3e0.4x=-5
0.4x=-5/3e
x=-5/3e(.4)≈-1.528..
..
solve log5 + log(x-9)= 1
log%285%29%2Blog%28x-9%29=1
log%28%285%29%28x-9%29%29=log%2810%29
5x-45=10
5x=55
x=11
..
solve ln(x-1) + ln6= ln(3x)
ln(x-1) + ln6= ln(3x)
ln(x-1)(6)=ln(3x)
3x=6x-6
3x=6
x=2