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Mathematics 17 Online
OpenStudy (anonymous):

xll-vll

OpenStudy (anonymous):

12-7=

mathslover (mathslover):

It is necessary to know about "Roman Numerals" : XII --> 10 + 2 --> 12 VII ---> 5+2 ---> 7

OpenStudy (anonymous):

x/1 - v/1 = x-v

mathslover (mathslover):

X represents 10 V represents 5 I represents 1

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