-6 is your answer, because when you subtract a lower number from a higher number it becomes a negative.
HERE IS AN EXAMPLE:
0-5 is your question. if you do a number line it would look like this:
-5,-4,-3,-2,-1,0,1,2,3,4,5
for this, you would basically add on five(you 're not really adding 5) to the 5 that you are subtracting and count down ten.
I don't know if that made any sense. Hopefully, this answered your question and gave you a way of understanding negatives. I had trouble with them when I was in middle school and going into my first year of high school. :)
