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OpenStudy (anonymous):
Choose all properties that were used to simplify the following problem: [38 + 677] + (-38) [677 + 38] + (-38) 677 + [38 + (-38)] 677 + 0 677
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OpenStudy (anonymous):
Help?
OpenStudy (anonymous):
Thanks!
OpenStudy (chris911):
aww ur welcome and no prob
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