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Earn +20 ptsQ: What fractions have a common denominator of 18?
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Continue Learning about Basic Math
What is the least common denominator of two fractions?
The least common denominator is the least common multiple of the denominators of the fractions.
Why do you have to have a common denominator?
A common denominator is needed when adding or subtracting fractions of different denominators.
How are a common denominator and a common multiple different?
They are essentially the same. A common denominator is the common multiple of a set of denominators of a set of fractions.
How do you solve a fraction problem when you don't have the same denominator?
If you are adding or subtracting unlike fractions, convert them to equivalent fractions with a common denominator.
How do you subtract mixed number with different denominator?
Convert them to improper fractions with a common denominator.
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