Subtraction is nothing like addition.
If you are talking about addition, it means that 1+1=2 - one entity + one entity = two entities. Entities=numbers.
However, for subtraction it is the opposite. 1-1 = 0 - one entity eats/- one entity = zero entities. There are no other entities to eat except for itself. Thus when it eats itself, there are no more entities left.
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l like adding better than subtraction in maths
Subtraction is not commutative nor associative.
They are different in the same way that subtraction of integers is different from their addition.
Addition and subtraction can be thought of as the same thing because subtracting a negative number is the same as adding it and adding a negative number is the same as subtracting it.
adding is 2+2=4 and subtraction is 2-2=0