You must have a typo
If you want me to use the stated property, then you must have meant
9^(-x+15) = 27^x
if as assumed, then
(3^2)^(-x+15) = (3^3)^x
3^(-2x + 30) = 3^3x
-2x + 30 = 3x , using your stated property
-5x = -30
x = 6
solve the equation for x using the fact that if a^u =a^v then u=v. 9^-x+15=27x.
thanks
2 answers
thanks