Using this math logic, what is the answer for 19 + 12?

I get it!

It was a simple puzzle once you figured out the logic.

Ikr my classmate ( wich is an idiot and makes fart and burp noises) was like "ur a genius"

I'm 60 years old and still make fart and burp noises, but they're the real thing. Only problem: once you're past 50, NEVER trust a fart.

Well i get it if its the real thing but they do it b/c they think its histarical 4 no reason and do it just to anouy and ......... ok .........

Yup!

Seven three one

You take the difference of the numbers, and then their sum, and put them next to each other. 19+12=731