ok so at first if u have fractions like the first follow my instruction:
1st: u have 2/3---1/2, u will multiply 3 by 1 and 2 by 2 so u will get 6 and 4
but remember that 2/3 and 1/2 u cris cross it the left one comes first like 6 then 4 so it could balance and do the rest of the fractions like that.
2nd: if u have decimal u will check the number after the decimal but if the are the same u will compare the numbers before the decimal.
I hope it's usefull