Subtraction is a natural way to introduce the idea of negative numbers: while it is hard to conceive of having less than no apples, negative numbers arise when someone thinks about subtracting a larger number from a smaller, and they can be shown on a number line[?].
One way to subtract numbers is to use complements.
The traditional names for the terms of the subtraction
c = a  bare difference (c), minuend (a) and subtrahend (b).
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