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GCD & LCM Calculator

Enter two whole numbers. The calculator finds their greatest common divisor (GCD) and least common multiple (LCM) in one go โ€” useful for simplifying fractions and maths homework.

\u2014GCD
\u2014LCM

How to use

  1. Enter the first number.
  2. Enter the second number.
  3. Click Calculate to see the GCD and LCM.

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