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Answers.everydaycalculation.com » Compare fractions

Compare 40/50 and 9/21

40/50 is greater than 9/21

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 50 and 21 is 1050
  2. For the 1st fraction, since 50 × 21 = 1050,
    40/50 = 40 × 21/50 × 21 = 840/1050
  3. Likewise, for the 2nd fraction, since 21 × 50 = 1050,
    9/21 = 9 × 50/21 × 50 = 450/1050
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 840/1050 > 450/1050 or 40/50 > 9/21

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