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

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357

Q: What is the lowest common denominator of 17 and 21?

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945 is the lowest common denominator. 3 is the greatest common factor.

7

1/7 + 3/8 = 8/56 + 21/56 is the lowest common denominator.

The lcm, or lowest common multiple of 21 and 17 is 357.

Factor each number to see if they have common factors:21 = 3*736 = 3 *12The LCD is, 36*7 or 21*12, 252.

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945 is the lowest common denominator. 3 is the greatest common factor.

3

21

21

7

The lowest common denominator is 21.

LCD(8, 21, 7) = 168.

The greatest common denominator of any set of integers is infinite.

1/7 + 3/8 = 8/56 + 21/56 is the lowest common denominator.

The lcm, or lowest common multiple of 21 and 17 is 357.

2 21/100 Since 21 can be divided by 3 and 7 (lowest primes), but 100 cannot, then logically, 100 is the lowest common denominator for this, therefore 21/100

Factor each number to see if they have common factors:21 = 3*736 = 3 *12The LCD is, 36*7 or 21*12, 252.