Comment # 7 on bug 929338 from Bernhard Wiedemann

Please note that openSUSE includes java, libreoffice and mozilla
without using extra repos.

Might also be a problem with mixing repositories, especially ones compiled for
Factory / Tumbleweed.

you can use
yast2 repositories
to disable all additional (esp libreoffice-related) repos and then
zypper dup
use the "d" key to get details about which packages would be changed from/to
which repo.

and then make sure you have
zypper in libreoffice-calc