? + ? = 8 + + ? - ? = 6 = = 13 8

3.5 | 4.5 9.5 | 3.5

3.5+4.5=8 4.5+3.5=8 3.5+9.5=13 9.5-3.5=6

(3.5)+(4.5)= 8 + + (9.5)- (3.5)= 6 = = 13 8

Can you identify the logic behind the equation below and solve the puzzle by completing the equation?

12 + 13 + 7 = 1 15 + 16 + 11= 2 17 + 18 + 16 = ?