Răspuns:
sa zicem ca e ab+ba=110
ab+ba=110-55=
ab+ba=55
proba:
55+55=110
a-b ≤ 6
a-b=0 ,1, 2, 3, 4, 5, 6
93,94,95,96,97,98,99,82,83,84,85,86,87,88,71,72,73,74,75,76,77,60
