Well, since this is the topic of Star Trek. My assumption is that you are asking where does the name Seven of Nine come from. Seven of Nine was the number that she was of her unit composed of 9 people. This was very similar to how the Jem Hadar were. http://memory-alpha.org/en/wiki/Seven_of_Nine <-- this is your best info link.
5 over 4 as a mixed number is 1 and 1/4
1 and a quarter.
Bionca Seven is 5' 8".
The answer would be 7! or (7*6*5*4*3*2*1)=5040
Star Trek Deep Space Nine - 1993 Trials and Tribble-ations 5-6 was released on: USA: 4 November 1996 UK: 11 March 1997 Germany: 6 December 1997
5/7 − 4/9 = 17/63
Of those, 4/5 is the greatest.
5/4 + 7/9 = 2 1/36
Nine over ten because 4 over 5 = 8 over 10 and that is smaller than 9 over 10.
4 4/9
1 3/5
The answer is 5 4/5.
7/9 − 5/10 = 25/90 which reduces to 5/18
8 times with 5 left over.
5/8 divided by 7/9 = 45/56
9/12 minus 4/5 = -1/20
2/9 minus 5/27 = 1/27