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What is the least common denominator of 28 21 15?

Anonymous

∙ 8y ago

Updated: 9/18/2023

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

Wiki User

∙ 14y ago

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Related Questions

What is the least common denominator of 21 12 and 15?

420

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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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The Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of a pair of fractions. I assume the 7 and 21 are the denominators of two fractions you need to add or subtract.LCD(7, 21) = 21.

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There is none because the Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of two or more fractions.

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There is none because the Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of two or more fractions.

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