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Compare 8/20 and 54/21

1st number: 8/20, 2nd number: 2 12/21

8/20 is smaller than 54/21

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 21 is 420
  2. For the 1st fraction, since 20 × 21 = 420,
    8/20 = 8 × 21/20 × 21 = 168/420
  3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
    54/21 = 54 × 20/21 × 20 = 1080/420
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 168/420 < 1080/420 or 8/20 < 54/21

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