Unless the integer is fractional it is not an irrational number.
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No, not every negative number is an integer. For example, -11/2 is not an integer. However, -1, -2, -3, and so on, are negative integers. Perhaps that is what you meant to ask. The negative of every positive integer is a negative integer.
It is a negative integer, a negative rational integer, a negative real number.
Yes, and also a negative integer divided by a negative integer is equal to a positive number (but not necessarily an integer).
Negative. Sorry. No you do not. Adding a negative to a negative gives you a number that is even more negative. Picture a number line. A negative number is to the left of zero, and adding a negative number moves further left. ■
Yes, -17 is an integer. Any number that is a negative or positive whole number or zero is an integer.