Respuesta :
start at 0......move left 7....means we are moving into the negatives....and we are now at -7
now we move right 3......-7 + 3 = -4
now we move left 20......-4 - 20 = -24 <==
now we move right 3......-7 + 3 = -4
now we move left 20......-4 - 20 = -24 <==