Executing code stored as a list

Question

After understanding (quote), I'm curious as to how one might cause the statement to execute. My first thought was

(defvar x '(+ 2 21))
`(,@x)

but that just evaluates to (+ 2 21), or the contents of x. How would one run code that was placed in a list?

Answer 1

(eval '(+ 2 21))