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Mathematics 21 Online
OpenStudy (anonymous):

How do i find the lowest common denominator in these problems? 1. ( 3/72 2/90 ) 2. (5/67 7/8 ) 3.( 1/22 2/3 ) 4. ( 6/5 4/3 ) 5. ( 7/4 2/5 )

OpenStudy (mertsj):

write the prime factors and use the highest power of every DIFFERENT factor.

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