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Compare 4/5 and 27/21

1st number: 4/5, 2nd number: 1 6/21

4/5 is smaller than 27/21

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 21 is 105
  2. For the 1st fraction, since 5 × 21 = 105,
    4/5 = 4 × 21/5 × 21 = 84/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    27/21 = 27 × 5/21 × 5 = 135/105
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 84/105 < 135/105 or 4/5 < 27/21

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