SOLUTION: 3(9)^(x-1)=81^(2x+1) . . I am taking a online course and it is tough sometimes to try and teach urself . . any takers on expaling how i can solve this? Also, Log(1-5x)=2

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: 3(9)^(x-1)=81^(2x+1) . . I am taking a online course and it is tough sometimes to try and teach urself . . any takers on expaling how i can solve this? Also, Log(1-5x)=2      Log On


   



Question 375718: 3(9)^(x-1)=81^(2x+1) . . I am taking a online course and it is tough sometimes to try and teach urself . . any takers on expaling how i can solve this? Also, Log(1-5x)=2
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
The given equation is equivalent to 10%5E2+=+1-5x, or
100 = 1 - 5x,
5x = 1 - 100,
5x = -99,
x = -99/5. This value satisfies the original equation, so it is the final answer.