Answer :
OK let's start with 12/12 (since that is where you start) and subtract 12/12 from 3/12 (that's how much Andrew ate) so 12/12-3/12 which equals 9/12 and subtract 1/12 and you would get......
8/12
8/12
the answer would be 8/12 because if you add up 3/12 and 1/12 you get four 12 s then you subtract 4/12 from 12/12 and walahh you get your answer
