Bonjour,
a)
5/7 = 20/28
3/4 = 21/28
b)
3/4 > 5/7
c)
-20/28 > -21/28
d)
2/3 = 14/21
5/7 = 15/21
5/7 > 2/3
e)
-11/6 = -33/18
-17/9 = -34/18
-11/6 > -17/9
