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Mathematics 17 Online
OpenStudy (anonymous):

Find the sum or difference. 20/21-5/21 A 2/3 B 5/7 C 16/21

Nnesha (nnesha):

whats the LCM

OpenStudy (anonymous):

|dw:1416880924929:dw| which can be reduced by dividing 15 and 21 by three, to get 5/7

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