19. p.s. either u better be in K4 or have a major disability.  Lazyness is not aceptable

no no no, jay cole. poor misguided fools these days. 9+10 is 19.

EITHER HAVE A GOOD FUTURE AND BECOME THE MOST AWESOME PERSON IN THE WORLD WHILE CRUSHING ALL YOUR RIVALS AND LIVE A WINNER...

OR...

GO TO CAMP AND GET TORTURED THERE THE REST OF YOUR LIFE AND DIE A LOSER!

or simply try the secret roman formula and become mega-awesome and titanium. don't become music, the something of personality, or even 4 bars. not even coal. become TITANIUM and IMMORTAL and AWESOME! (stands for T.I.A.)

The answer they are looking for is 21. It's from a Vine.

9+10 = 10+9

   Do  NOT  ask  again, please!