I have installed AUCTeX, it compiled a test file OK, but I can't view the output.
I get " Cannot get Evince viewer ...". Xviewer, should be the analogue in my distro, I think (I have not way to check through TeXworks as it uses an integrated viewer), as that is what I use to view pdf files.
I tried M-x customize-variable TeX-view-program-list following the instruction of a related post.
$ cat /etc/*-release DISTRIB_ID=LinuxMint DISTRIB_RELEASE=18.3 DISTRIB_CODENAME=sylvia DISTRIB_DESCRIPTION="Linux Mint 18.3 Sylvia"