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OpenStudy (trwatkins1):
Which equations show that the set of whole numbers is closed under addition? Choose all answers that are correct. A. 0 + (–1) = –1 B. 1 + 1 = 2 C. 2 + 0 = 2 D. 2 + (–1) = 1
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OpenStudy (trwatkins1):
@YoungStudier
OpenStudy (anonymous):
Hi! What do you think?
OpenStudy (youngstudier):
Do they have a set of numbers or..?
OpenStudy (trwatkins1):
no thats all of it
OpenStudy (youngstudier):
I'm not sure for this one....
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