Question

If you answer correctly I give brainliest

All you need is on the photo

Answer 1

Answer:

Step-by-step explanation:

-1 + (-1) = -2

-1 + 1 = 0

-1 + 0 = -1

1 + (-1) = 0

1 + 1 = 2

1 + 0 = 1

im very confused

am i missing somethiing here?