Which one will replace the question mark?

36 + 54 = 90

Therefore, 45 + 63 = 108.

and (5 x 4 - 5) = 15

(5 x 5 - 3) = 22.

and (5)² + (3)² + (8)² = 98

Therefore (6)² + (7)² + (3)² = 94.

and (44 + 28)/9 = 8

Therefore, (64 + 53)/9 = 13.

and (7 x 5 x 4) + (6 x 8 x 9) = 572

Therefore (4 x 3 x 5) + (7 x 2 x 5) = 130.

and (11 + 16 + 10 + 13)/2 = 25

Therefore, (15 + ? + 12 + 10)/2 = 22

Hence 37 + ? = 44

? = 44 - 37

? = 7.

(7 x 6) + 2 = 44

(7 x 5) + 2 = 37.

(5 x 9) + 1 = 46

Similarly, (7 x 11) + 1 = 78.

(31 x 2 - 6) = 56

and (45 x 2 - 9) = 81

and 5 x 7 x 4 = 140

Therefore, 4 x 4 x ? = 96

? = (96/16) = 6.