(-4, 6), (0, 2), (4, -2) are all ordered pairs that have the sum as 2. -4+6 is the same thing as 6-4 if there's more positive than negative 0+2=2 because 0 plus a number equals to that number 4-2=2 because you're adding a negative number with the positive number together to get the answer
Just be aware that I might not make any sense at all
