Use <<apt-get autoremove» to purge them
Following additional packages will be installed:
  jadetex texlive-base texlive-binaries texlive-fonts-recommended
  texlive-formats-extra texlive-htmlxml texlive-latex-base texlive-latex-extra
  texlive-latex-recommended texlive-latex-recommended-doc texlive-luatex
  texlive-pictures texlive-pictures-doc texlive-plain-generic texlive-pstricks
  texlive-pstricks-doc texlive-xetex unity-tweak-tool
  xserver-xorg-video-nouveau
Suggested packages:
  perl-tk libspreadsheet-parseexcel-perl dot2tex prerex ruby-tcltk
  | libtcltk-ruby firmware-misc-nonfree
Recommended packages:
  texlive-extra-utils texlive-font-utils
Following packages will be PURGED:
  checkbox-converged checkbox-gui checkbox-qt qml-module-ubuntu-web
  texlive-math-extra unity-webapps-facebookmessenger unity-webapps-launchpad
  unity-webapps-livemail unity-webapps-qml unity-webapps-youtube
  xul-ext-websites-integration
Following NEW packages will be installed:
  texlive-binaries texlive-fonts-recommended texlive-formats-extra
  texlive-htmlxml texlive-latex-base texlive-latex-extra
  texlive-latex-recommended texlive-plain-generic texlive-xetex
  xserver-xorg-video-nouveau
following packages will be updated:
  jadetex texlive-base texlive-latex-recommended-doc texlive-luatex
  texlive-pictures texlive-pictures-doc texlive-pstricks texlive-pstricks-doc
  unity-tweak-tool
9 updated, 10 new packages will be installed, 11 to be purged and 1491 not updated.
1895 not fully installed or purged.
It is needed to download 0 B/530 MB of files.
396 MB of disk space will be used after this operation
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Preconfiguring packages ...
(reading database ... 511036 files of folders currently installed.)
ready to unpack .../texlive-latex-recommended-doc_2017.20170818-1_all.deb ...
unpacking texlive-latex-recommended-doc (2017.20170818-1) sobre (2015.20160320-1ubuntu0.1) ...
dpkg: error when processing file /var/cache/apt/archives/texlive-latex-recommended-doc_2017.20170818-1_all.deb (--unpack):
 trying to overwrite `/usr/share/doc/texlive-doc/latex/unicode-math/README.md.gz', which is also in package texlive-math-extra 2015.20160320-1
dpkg-deb: error: copied subprocess was terminated by signal (broken pipe)
Errors while processing were found:
 /var/cache/apt/archives/texlive-latex-recommended-doc_2017.20170818-1_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
elhoir@elhoir-desktop:~$