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anonymous
 5 years ago
2/3, 3/7, 7/8 common denominator?
anonymous
 5 years ago
2/3, 3/7, 7/8 common denominator?

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sandra
 5 years ago
Best ResponseYou've already chosen the best response.0ok, so a common denominator means "what number can I multiply all the bottom numbers by *something* to get the same number"  i.e. what are they common multiples of

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0so one sure way to get a common denominator  a number all of the bottom numbers are divisors of  is to multiply them all together

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so 168 is the common denominator.

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0yes, that is one common denominator for sure

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0since 168 is divisible by 3, 7, and 8  and you know this is true since you multipled them all together

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0is that the lowest common denominator?

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0yes, I belive so: http://en.wikipedia.org/wiki/Least_common_multiple#Calculating_the_least_common_multiple

sandra
 5 years ago
Best ResponseYou've already chosen the best response.0see the prime factorizatoin method part of that article
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