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Compare 28/40 and 21/5

1st number: 28/40, 2nd number: 4 1/5

28/40 is smaller than 21/5

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 5 is 40
  2. For the 1st fraction, since 40 × 1 = 40,
    28/40 = 28 × 1/40 × 1 = 28/40
  3. Likewise, for the 2nd fraction, since 5 × 8 = 40,
    21/5 = 21 × 8/5 × 8 = 168/40
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 28/40 < 168/40 or 28/40 < 21/5

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