please help right the rules for adding and subtracting
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The rules of adding and substracting are pretty simple but may be confussing at times.
-Adding has no problem especialy when dealing with positive inteers. e.g 45+3=48
-Adding negative integers is equivalent to taking the positive integer and subtracting from it the negative integer.
e,g 10+(-9) is the same as 10-9=1
-Adding negative integers is the same as adding the two numbers as you would if they were positive then placing a negative sign in fron if the result.
-Subtracting negative integers is different in that -9-(-9)=?
the two negative signs change to a plus hence we have -9+9
which is equal to zero.
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