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How do you subtract fractions with different denominators?
By finding their lowest common denominator by means of their lowest common multiple
How can you find a common denominator for two unlike fractions?
Find the lowest common multiple of the denominators and adjust the fractions accordingly
What is the common denominator of 4 and 14?
Assuming those are denominators of fractions you wish to add or subtract, you can use any common multiple of 4 and 14; the Lowest Common Multiple (LCM), often called the Lowest Common Denominator (LCD) especially when when referring to the denominators of fraction, provides the smallest numerators. For 4 and 14, the LCM is 28.
What way is subracting fractions with unlike denominators like adding fractions with unlike denominators?
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators.
What is the lowest common multiple for 8 and 14?
The lowest common multiple of 8 and 14 is 56.
