help!!!

1-(-1)=1+1=2

Subtracting a negative is basicly like adding the same numbers

When subtracting a negative, you can just add the absolute value of the negative you are subtracting from the other. Two negatives make a positive, and since you are subtracting (negative) a negative (two negatives), you are simply adding.

 1-(-1) turns into...

1+1

I think you can figure the rest out!