9+10 so lets break it down. half of 9 is 4.5 right? so 4.5 + 4.5 equals = 9 and half of 5 is 2.5 so if we do 4.5 + 4.5 + 2.5 + 2.5 our answer is 19... but 19 isn't the answer. so 1 + 1 = 2 and 2 + 2 = 4 and 4 + 4 = 8. add the .5 to 4 and 4.5 + 4.5 = 9 like I said at the top. but what if we add...