Latin was the language spoken by the Romans and the equivalent words for 29 were 'viginta et novem' for XXVIIII or 'undetriginta' for IXXX
Note that in today's modern usage of Roman numerals 29 is now considered to be XXIX and there no Latin word for it.
29 = XXIX in roman numerals
XXIX is the number 29 in Roman numerals. XXIX (29).
29
Under today's modern rules governing the Roman numeral system 29 is XXIX. However, the Romans themselves wrote out 29 in the form of XXVIIII as can be seen today in the ruins of the Coliseum in Rome and these numerals can be simplified to IXXX (-1+30=29) indeed the Latin word for 29 is 'undetriginta' which literally means one from thirty.
XXIX
Nowadays 29 as a Roman numeral is XXIX but the ancient Romans would have notated it as XXVIIII
XXlX = 29
Roman is 29
Under today's rules we write out the equivalent of 29 into Roman numerals as XXIX But under the Roman rules 29 was XXVIIII *By roman rules I assume you mean Roman Numerals. Romans wrote out 29 as XXIX, the same way they work today.
15 is XV. 29 is XXIX.
xixx is not a Roman numeral.
XXIX