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How to subtract integers?

Sagot :

Like this 1+[-1]=0
Because when you add with a negative number its like subtraction.Now when you 
subtract a negative from a positive ex. 2-[-1] it will become now adding so it will look like this 2+1=3 but if 2 is the negative number ex. -2-1 then the answer will be a negative number -2-1=2+1=-3