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Mathematics 8 Online
OpenStudy (anonymous):

5/21 - 5/28 ?? simplify

OpenStudy (anonymous):

21 is 3 7's 28 is 4 7's...

OpenStudy (anonymous):

OK then...5/3 over 7 - 5/4 over 7

OpenStudy (anonymous):

U can do either one, lcd 3*4*7 or the reduced one.

OpenStudy (anonymous):

Dang, he has gone and posted another one...

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