Answer:
It is commutative property (in my opinion)
Step-by-step explanation:
-1 + 5= 4 5 - 1 =4
Both give you the same answer, thus the arrangement of the INTEGERS does not matter.
Note that I mentioned integers since this is not possible for natural numbers alone. They are not closed under subtraction. Here you -1 and 5 both of which are integers, their SUM give you an integer as well.
Hope this explanation helps!!
