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Mathematics 19 Online
OpenStudy (anonymous):

10+ -1=??

OpenStudy (anonymous):

9

OpenStudy (anonymous):

uuuuuuuu?...9?

OpenStudy (anonymous):

9 I do believe:)

OpenStudy (anonymous):

10 + (-1) = 10 - 1 = 9 (;

OpenStudy (anonymous):

oh... DUH! lol i knew that... haha blonde moment? haha

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