When you're adding or subtracting fractions with different denominators, if you multiply the denominators that's your Quick Common Denominator. I'ts useful for denominators that don't have a low Least Common Factor.
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it means when two denominators can reduce fast
A shared multiple of the denominators of several fractions.
A few synonyms for common denominator are , common divisor, common measure, denominator, numerator
A common denominator of 20 and 30 is 600. This is NOT the least common denominator, though.
The greatest common denominator is infinite. The least common denominator is 45.