Answer: 13 units.
Step-by-step explanation: Because negative 13 is the same distance as 13 from 0, |-13|=13. -1,-2,-3,-4,-5,-6,-7,-8,-9,-10,-11,-12,-13 has the same amount of numbers as 1,2,3,4,5,6,7,8,9,10,11,12,13. Both have 13 numbers which means that they are both 13 away from 0 including -13.