6целых5/8-4целых, 9целых-5/6, 9целых-3целых5/8,

6 5/6 - 4 = 2 5/6
6 5/6 - 4 = 41/6 - 4
НОК(6,1) = 6
 (41*1 - 4*6)/6 = (41 - 24)/6 = 17/6 = 2 5/6
9 - 5/6 = 8 1/6
9 - 5/6
НОК(1,6) = 6
 (9*6 - 5*1)/6 = (54 - 5)/6 = 49/6 = 8 1/6
9 - 3 5/8 = 5 3/8
9 - 3 5/8 = 9 - 29/8
НОК(1,8) = 8
 (9*8 - 29*1)/8 = (72 - 29)/8 = 43/8 = 5 3/8