1) 7/13 D=13-7=6
2) a/b≤1
0/7=0
+-1/7
+-2/7
+-3/7
+-4/7
+-5/7
+-6/7
+-7/7=1. In total 15 fractii.
c) a/b>1, a=prim, max 5
2/1
3/1
5/1
3/2
5/2
5/2
5/3,. In total 7 fractii.
d) 11/33=1/3=0,(3)
1101/3033>1101/3303=1/3 Deci membrul 2 al egalitatii este mai mare decat M1, deci FALS, nu avem egalitate