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Mathematics 14 Online
OpenStudy (anonymous):

-6/7 + 6/21

OpenStudy (anonymous):

-12/21

OpenStudy (anonymous):

@y? That's incorrect. :|

OpenStudy (anonymous):

(-6/7)(3/3)+6/21 -18/21+6/21 -12/21

OpenStudy (anonymous):

are you sure?

OpenStudy (anonymous):

Wait a second, I'm checking it out realll quick.

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