For openSUSE Leap 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/LibreOffice:Factory/openSUSE_Leap_15.6/LibreOffice:Factory.repo
zypper refresh
zypper install fixmath
For openSUSE Leap 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/LibreOffice:Factory/openSUSE_Leap_15.5/LibreOffice:Factory.repo
zypper refresh
zypper install fixmath
For SLE 15 SP6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/LibreOffice:Factory/SLE_15_SP6/LibreOffice:Factory.repo
zypper refresh
zypper install fixmath
For SLE 15 SP5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/LibreOffice:Factory/SLE_15_SP5/LibreOffice:Factory.repo
zypper refresh
zypper install fixmath
For SLE 15 SP4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/LibreOffice:Factory/SLE_15_SP4/LibreOffice:Factory.repo
zypper refresh
zypper install fixmath
For SLE 12 SP5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/LibreOffice:Factory/SLE_12_SP5/LibreOffice:Factory.repo
zypper refresh
zypper install fixmath