9 in Roman numerals, how to write?

9 = IX
8 = ? ... 10 = ?
Explanations below.

Roman numerals used to make the conversion:


I = 1; X = 10;

Reading rules

9 = 10 - 1 = X - I = IX;

9 = IX

In Roman numerals, how to write:
8 = ? ... 10 = ?

In Roman numerals online converter

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