## anonymous 4 years ago solve log (base 3) (5x-2)= 4

1. saifoo.khan

$\log_3 ( 5x -2) = 4$ $5x -2 = 3^4$ Can u solve now?

2. saifoo.khan

the property i used, $\Large \log_a b = c \to b = a^c$

3. anonymous

how do you get rid of the log base 3 again..

4. saifoo.khan

It's a rule - i dont remember it's name though. i can google if u want. but we change it the i showed in my 2nd comment.

5. anonymous

yeah ill look it up.. i just wanna know how to get rid of the log. I just cant remember how.. :/

6. saifoo.khan

It's just like this: $\large \log_a b = c \to b = a^c$or, $$\log_e 2 = 2$$ can be written as $$2= e^2$$

7. anonymous

ok