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Death Note
Death Note asked in Science & MathematicsMathematics · 5 years ago

Is there a formula for finding the least common denominator?

4 Answers

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  • Keith A
    Lv 6
    5 years ago

    Factorise each number into prime power factors

    Multiply together the highest powers of each prime that occurs in either factorisation.

    e.g. 75 = 3 * 5^2 30 = 2 * 3 * 5

    So the highest powers of 2, 3, and 5 are 1, 1, and 2 respectively;

    and no other primes occur (if you like, they occur to power zero.)

    So LCD (75. 30) = 2 * 3 * 5^2 = 150

  • Puzzling
    Lv 7
    5 years ago

    Here's a video that shows a quick method.

    Source(s): https://www.youtube.com/watch?v=y_F51D-r0j4
  • ?
    Lv 7
    5 years ago

    Euclid's algorithm is a method, not a formula.

  • pawan
    5 years ago

    prime factorise all the numbers together.

    multiply the numbers you used for factorisation

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