you take the first number, then add it to the other number:
2+1=3
negative integers are different:
-2+1= -1
Negative and negative:
-2-1= -3
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It is important to add and subtract integers: to get a new integer value in mathematics .
to subtract an integer, add its opposite or additive inverse.
When you add, subtract, or multiply integers, you get integers. When you divide one integer by another one, you may or may not get an integer.
The answer is a negative or positive integer with one or two digits.
You look at the sign before a number and that tells you what is to be done to the number that follows.