Answer:
Is this a trick question, because I see two pairs of "1 1" in there with spaces instead of a "+", so are they supposed to be "11"s or are there 3 separate expressions, or did someone accidentally two plusses?
But yeah, anyway. Assuming it's one expression with two 11s, by cold, hard, mathematical law of operations, it's 30.
You'd only get something else if you're not following mathematical procedures, like when doing certain types of logic programming.