Пусть 1 число - х, тогда 2 число - 1 25/38*х, а 3 число -( 1 25/38*х + 1 1/3), значит:
(х + 1 25/38*х + 1 25/38*х+1 1/3) : 3 = 2 13/18,
(х + 1 25/38*х + 1 25/38*х+1 1/3) = 2 13/18 * 3 = 49/18 * 3 = 49/6,
38/38х + 63/38х + 63/38х = 49/6 - 4/3 = 49/6 - 8/6 = 41/6,
164/38х = 41/6,
Х = 41/6 : 164/38 = 41/6 * 38/164 = 38/24 = 1 7/12 - 1 число,
1 25/38 * 1 7/12 = 63/38 * 38/24 = 63/24 = 2 15/24 - 2 число,
1 25/38 * 1 7/12 + 1 1/3 = 63/24 + 4/3 = 63/24 + 32/24 = 95/24 = 3 23/24 - 3 число