Negative numbers are the opposite of positive numbers and they always have a - negative sign before it. They are in our lives because when you go to school and study math they teach us about negative numbers. These numbers are really important because they represent things like money. For example, if you have -45 dollars that means that you owe that person of you need that kinda of money or even that you got taken away. They are useful in math equations because they usually run on a number line.
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