Respuesta :

Done.
Here is the 6 that I left ==> 6

Answer:

SIX - 9 (IX) = S

9 (IX) - 10 (X) = I

40 (XL) - 50 (L) = X

SIX

Step-by-step explanation:

its the roman numbers

so SIX-IX= u stay with the x and so on

hope this helped :D