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Answers.everydaycalculation.com » Compare fractions

Compare 21/75 and 70/90

21/75 is smaller than 70/90

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 90 is 450

    Next, find the equivalent fraction of both fractional numbers with denominator 450
  2. For the 1st fraction, since 75 × 6 = 450,
    21/75 = 21 × 6/75 × 6 = 126/450
  3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
    70/90 = 70 × 5/90 × 5 = 350/450
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 126/450 < 350/450 or 21/75 < 70/90

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