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Answers.everydaycalculation.com » Compare fractions

Compare 30/7 and 21/10

1st number: 4 2/7, 2nd number: 2 1/10

30/7 is greater than 21/10

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 10 is 70

    Next, find the equivalent fraction of both fractional numbers with denominator 70
  2. For the 1st fraction, since 7 × 10 = 70,
    30/7 = 30 × 10/7 × 10 = 300/70
  3. Likewise, for the 2nd fraction, since 10 × 7 = 70,
    21/10 = 21 × 7/10 × 7 = 147/70
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 300/70 > 147/70 or 30/7 > 21/10

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