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Answers.everydaycalculation.com » Compare fractions

Compare 20/42 and 56/90

20/42 is smaller than 56/90

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 42 × 15 = 630,
    20/42 = 20 × 15/42 × 15 = 300/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    56/90 = 56 × 7/90 × 7 = 392/630
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 300/630 < 392/630 or 20/42 < 56/90

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