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Answers.everydaycalculation.com » Compare fractions

Compare 30/4 and 21/70

1st number: 7 2/4, 2nd number: 21/70

30/4 is greater than 21/70

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 70 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 4 × 35 = 140,
    30/4 = 30 × 35/4 × 35 = 1050/140
  3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
    21/70 = 21 × 2/70 × 2 = 42/140
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 1050/140 > 42/140 or 30/4 > 21/70

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