Question

Show that integers are closed under addition and subtraction.​

Answer 1

Answer:

There are infinitely many numbers in this set of numbers. The set of whole numbers is "closed" under addition and multiplication. ... The integers are "closed" under addition, multiplication and subtraction, but NOT under division ( 9 ÷ 2 = 4½).

Step-by-step explanation:

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Answer 2

Answer:

-1 and 1 is closed integer...

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