common denominator in Numbers topic

From Longman Dictionary of Contemporary Englishcommon denominatorˌcommon deˈnominator noun [countable]    1 MIan attitude or quality that all the different members of a group have  The common denominator of both types of novel is the vulnerable threatened heroine.2 the lowest common denominator3 HMN technical a number that can be divided exactly by all the denominators (=bottom number) in a set of fractionsExamples from the Corpuscommon denominatorThe common denominator in these two election campaigns was money.