Answers

2014-09-10T18:45:57+08:00
The least common multiple is 7
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no its the gcf!
I'm so sorry ! I'm wrong
2014-09-10T19:03:42+08:00
The answer is ==>168 :) 
 LCM means Least Common Multiple
LCD means  Least Common Denominator (in getting LCM, you just have to do the same in getting LCD)
GCF means Greatest Common Factor
:D    
  
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