Question

помогите найти правильный ответ

Answer 1

8-3 = 5, 5+4 = 9
9-3 = 6, 6+4 = 10
13-3 = 10, 10+4 = 14

10-3 = 7, 7+4 = 11

?-3 = 9 => ? = 9+3 = 12
12-3  =9, 9+4 = 13