Question 744788
The strategy here is to rewrite everything in terms of powers of 3 and then use the inverse property of logs:

{{{log3(1/27)^4=log3((1/3^3))^4}}}


{{{log3((1/3^3))^4=log3((3^(-3)))^4}}}


{{{log3((3^(-3)))^4=-12*log3(3)=-12}}}