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The commutative property holds for all numbers under addition, regardless of whether they are positive or negative - the sign of the number stays with the number, for example:

-2 + 5 = (-2) + 5

= 5 + (-2)

= 5 + -2

-2 + -5 = (-2) + (-5)

= (-5) + (-2)

= -5 + -2

Subtraction is not commutative, but when subtraction is taken as adding the negative of the second number, the commutative property of addition holds, for example:

5 - 2 ≠ 2 - 5

but:

5 - 2 = 5 + -2

= 5 + (-2)

= (-2) + 5

= -2 + 5

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