Closure of the set of numbers under subtraction or, equivalently, the existence of additive inverses.
Arguments using numbers to prove their point.
There is an infinite amount if numbers in existence.
The product of three negative numbers is negative.
They will be negative numbers as for example -5+(-7) = -12
No. Whole numbers are counting numbers and zero.
The product of three negative numbers is negative.
Where do we see negative numbers
It belongs to the set of negative rational numbers, negative real numbers, fractionall numbers, rational numbers, real numbers.
No, not all negative numbers are rational. There are many negative numbers that are irrational, just like the positive numbers.
Rational numbers can be negative or positive.
What do I know about negative numbers? A lot.