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What is the least common denominator of 28 21 15?

Updated: 9/18/2023

Wiki User

∙ 7y ago

Best Answer

So with 3 fractions with denominators of 28 21 and 15: 28 = 7 x 4, 21 = 7 x 3, and 15 = 5 x 3. 28 and 21 have 7 in common; 21 and 15 have 3 in common, so those factors are used once: 7 x 4 x 3 x 5 = 420

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∙ 14y ago

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∙ 7y ago

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least common denominator for 15 and 10 is 30, so 9/15 = 18/30 and 7/10 = 21/30

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What is the least common denominator of 14 and 21?

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