Can you tell us the missing number that fit in this grid ?

Question

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

Answer 1

Answer is 6

37, 10, 82 - 3+7 = 10 & 8+2 = 10
29, 11, 47 - 2+9 = 11 & 4+7 = 11
96, 15, 87 - 9+6 = 15 & 8+7 = 15
42, ? , 15 - 4+2 = 6 & 1+5 = 6.