Well a property of 9 is 4+5, turn that into 4x5 and yo have 20, so 9=20 Then you have the 10, 0 is nothing , so you take away the 0 and you have 1. So 10=1 Then you add them together 20+1 is 21 So your final answer is 21 Lol math 4 noobs
Well, if you're smart, you wouldn't have asked this question. If you're smart, you would know that asking this on google will give you the answer faster than asking on a forum. Go figure.
Oh, okay. I guess the worst grade in your class is also unique because it was never obtained before ;..; I feel like I sound way to serious in a joke.