The values added in addition are called 'addends', and the result of the addition is the 'sum'.
Any value added to the additive identity (0) is the value itself.
A value added to the additive inverse (the negative of itself) equals the additive identity (0).
Negative addends are subtracted instead of added.
Subtracting a negative addend reverses the operation upon itself and turns it into addition.
Order does not matter when adding elements together, as long as the final sum reflects all addends.
Grouping does not matter when adding elements together, as long as the final sum reflects all addends.
The additive identity property states that any value added to 0 (or the 'additive identity') is equal to the value itself.
The additive inverse property states that any value added to its additive inverse (itself multiplied by -1) is equal to zero.
Negative addends are subtracted instead of added.
Subtracting negatives addends reverses the operation upon itself, changing the operation from subtraction to addition.
Neither grouping nor order matters when adding addends, only that they are all added together in the final sum and the negatives are handled correctly.
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