Then like EP said.
3 dollars for pizza, so 3*3 = 9.
20-9 = 11.
11 - 5 = 6.
Was it really hard? No. Was your question written confusing? yes.
We can't answer since your question is misleading and is confusing to read.
Please correct your latex.
Do you mean a 20 dollar bill, pizza is 3 dollars, 3 drinks, 3 pizza, and 5 change?
We aren't here to do your homework.
You cannot delete a post after a reply but it's fine keep it here.