Subtracting an integer is the same as adding the additive inverse. In symbols:
a - b = a + (-b), where "-b" is the additive inverse (the opposite) of b.
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addition and subtract in integers
the addition of integers is when adding negative and positive integers
It is important to add and subtract integers: to get a new integer value in mathematics .
negetive integers are not closed under addition but positive integers are.
You can use them for counting, which is in fact addition. You can also use them for subtracion. Integers are natural numbers. This means you don't use decimals or fractions.