Question 303926
There are two things that you have to be able to see.
You have to know that 27 is a power of 3 
27=3^3
you have to know that 1/27 is 1/3^3 and also 3^(-3)
1/27=3^(-3)
so we have 3^(-3)=3^2x
2x=-3
x=-1.5