Say 0 to 1 has been divided into 35 equal parts ( LCM of 7 and 5)
the division will be marked as 1/35, 2/35,3/35 likewise....35/35
5/35 = 1/7, 7/35 = 1/5, like wise take multiples of 5 and 7 the order would be
5/35,7/35,10/35,14/35,15/35,20/35,21/35,25/35,28/35,30/35,35/35
minimum difference is 1/35 ( between 14/35 and 15/35, 20/35 and 21/35)