Assuming that you mean opposites (rather than oppisites), the answer will depend on what kind of opposites: additive opposites or multiplicative opposites.
In the first case you have the same set as you started with: whole numbers.
In the second, you will have the set that consists of the union of
The set of all whole numbers and their opposites are
Apart from zero (which is its own opposite), the opposites of whole numbers are also whole numbers. You have the set of whole numbers which is also known as the set of integers.
The set of whole numbers includes all their additive opposites. So the set is the same as the one you started with.
It would be an integer (positive or negative whole number).
These are the integers.
The set of all whole numbers and their opposites are
The set of integers (ℤ) is the set of the positive whole numbers and their additive opposites (the negative whole numbers).
That is called the set of "integers".
Apart from zero (which is its own opposite), the opposites of whole numbers are also whole numbers. You have the set of whole numbers which is also known as the set of integers.
Integer
The set of whole numbers includes all their additive opposites. So the set is the same as the one you started with.
INTEGERS
They are called rational numbers. The set of rational numbers contains the opposites of its members.
The set of numbers that include the natural numbers, their opposites and 0 is called the set of integers.
Apart from zero (which is its own opposite), the opposites of whole numbers are also whole numbers. You have the set of whole numbers which is also known as the set of integers.
The set of all real numbers is one possible answer.
J