x=answer..
-5+4=
4-5
-5+4=1
4-5=4-4=0-1=-1
x=-1
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10
go from -5 to positive 4 and count how many are in between.
