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Mathematics 21 Online
OpenStudy (anonymous):

help me please ill give medals out for the right answer

OpenStudy (anonymous):

25 + (–15 + 4) = (25 + (–15)) + 4

OpenStudy (anonymous):

A. commutative property B. associative property C. opposite of a sum property

OpenStudy (pinkylee123abc):

That's a lot of squares in the question..

OpenStudy (anonymous):

?????

OpenStudy (anonymous):

25 + (–15 + 4) = (25 + (–15) + 4

OpenStudy (pinkylee123abc):

Is there a D.? Sorry about the long wait, huge lag issues. But I would probably go with C.

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