6 Seconds

That's how long it took me to figure this out. I must be a genius.

They say only people with an IQ with 140 and over are able to figure this out.

If:
2 + 3 = 10
7 + 2 = 63
6 + 5 = 66
8 + 4 = 96

Then:
9 + 7 =????