Which expression illustrates the associative property of addition?

(3 + 19) - 12 = (3 + 12) - 19

3 + (19 - 12) = 3 + (19 + 12)

(3 + 19) - 12 = 3 + (19 - 12)

3 + (19-12) = 3 - (19 + 12)

DONE

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