Условие:

8 + 76
4 + 97
127 + 9
168 + 9
6 + 68
7 + 75

8 + 76 = 156 = 9;
4 + 97 = 137 = 6;
127 + 9 = 5 + 9 = 14;
168 + 9 = 8 + 9 = 17;
6 + 68 = 128 = 4;
7 + 75 = 145 = 9.