Explain how to find the distance between -2 and 3 on a number line

The distance between any 2 points on a number line when the 2 points are x and y is
|x-y|

|-2-3|=|-5|=5
the distance is 5

or
it take 2 units to get to 0 from -2
it takes 3 units to get from 0 to 3
2+3=5

Where's the rest of the

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