Best Answer

The denominators of 20 and 15 are both 1, therefore, the lowest common denominator is 1.

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Q: What is the lowest common denominator of 20 and 15?

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The answer is 20.

The lowest common denominator of any two positive numbers is always 1.

20 is the lowest common denominator for 4 and 10.

60 is the lowest common multiple of 20 and 15.

60

Related questions

The lowest common denominator of any set of whole numbers is 1

The answer is 20.

The lowest common denominator of any two positive numbers is always 1.

80

20 is the lowest common denominator for 4 and 10.

60 is the lowest common multiple of 20 and 15.

20

The least common denominator (LCD) is 1.

20

60

LCD(4, 5) = 20.

20, although if you reduced 15/20 to 3/4, the common denominator would be 4.