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Mathematics 15 Online
OpenStudy (anonymous):

3/13+ (-4/7) Leat common multiple is 91? Then what to do to solve this?

OpenStudy (saifoo.khan):

yes, 91.

OpenStudy (anonymous):

3/13 X 7/7 + -4/7 X 13/13=?

OpenStudy (anonymous):

answer 104/91?

OpenStudy (saifoo.khan):

-32/91

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