-39 is the furthers away from 0
this is because if you draw a number line -16 would be 16 away from 0, 12 would be 12 away from zero and 7 would be 7 away from 0...
| - - - - - - - - - - - - - - - |- - - - - - | - - - - |
16 0 7 12
and -39 would be 39 digits away from 0, therefore its the furthest away from 0
Hope this helped you- have a good day bro cya)