Question

If you start at 0, move to left 7, right 3, and left 20, where do you end up?

Answer 1

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 <==

Answer 2

if this is by negatives than the answer would be -24