LibreOfficeDev 25.2 Help
jPtfJ‖In the case of a fraction whose numerator and denominator consist of a product, a sum, and so on, the values that belong together must be bracketed together.
4bWFt‖Use the following syntax:
{a + c} over 2 = m
FX6mw‖or
m = {a + c} over 2