Maybe its 10?
by the order of operations?
wtf i cant do simple maths with beer
it's 12. 4+(4*2)??????
The answer is 16, so if the site is not accepting that then the fault is elsewhere.
What error message are you receiving?
8 doesn't work. 10 doesn't work. The answer could be 12 by the math but it doesn't work. Neither does ocho, diez, once, doce, or dieciseis. They all give the error "Answer to the question does not match Please go back and try again."
It's a shame no one knows this answer, because there appears to be a big resurgence of new posts after the site was all but dead for the longest time.