X is ten and I is one. When the I is in front of the X it means subtract one. 10-1 is 9. IX is 9.
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9 in Roman numerals is written as IX.
XXIIX-IX-IXImproved Answer:-In today's notation of Roman numerals it is: XXVIII-IX-IX
It is already in Roman numerals as IX which means 10-1 = 9
The Roman numeral IX is 9.
09 in Roman Numerals is written as IX