Well first you want to find out what 12 plus 8 is and that is 20 so first you do the parenthesis which is 3+2 and that is 5 and 5x4 is 20 so your answer is 20
so originally there was 37 now there is 25 so if you trying to find out how many left you take 37-25=12 and 12 is how many left that zoo. hope this helps
