You park in a garage 3 floors below ground level . Then you get in the elevator and go up 12 floors . Write an addition expression to represent this situation . Then find the sum . Please help me!!

Question

***[isuru]*** · Answer

Hi,
  if the ground floor is  "x"
            ur first position
          is
                  x - 3 'cause u r 3 floors under
   and ur  final position is
            (x - 3) +12

 so now u r in a floor which is located 9 floors above the ground floor....

hope this will help ya!!!!