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A common denominator, though the least, is 260.

Q: What is a common denominator for 13 and 20?

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

The common denominator of 9 and 13 is 1

A common denominator of 20 and 30 is 600. This is NOT the least common denominator, though.

13 = 1 x 13, 20 = 2 x 2 x 5. There are no common factors so the LCM is the product, ie 260.

The least common denominator of 13 and 52 is52

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

The common denominator of 9 and 13 is 1

A common denominator of 20 and 30 is 600. This is NOT the least common denominator, though.

13 = 1 x 13, 20 = 2 x 2 x 5. There are no common factors so the LCM is the product, ie 260.

The least common denominator of 3 and 13 is 39.

The least common denominator of 13 and 52 is52

A common denominator, though not the least one, is 12*20 = 240.

The lowest common denominator is 40 5/8 = 25/40 13/20 = 26/40 so 13/20 is bigger

The LCM is 52

20

The answer is 20

Divide the numerator and the denominator by their greatest common factor to reduce to its lowest equivalent fraction. For example, 169/260=13/20 after dividing the numerator and the denominator by 13.