1.Find the value of when = 4.

My attempt: == 4

=4

27x=1

x= 1/27.

When checked on a calculator it doesn't work. I don't understand what to do. Is there a way to solve this without using calculators?

2. Solve the equation

I don't have an attempt since I can't understand what operation to use.

Whoops, wrong category. Can I request for a Moderator (if there is one in here) to relocate this to Algebra?