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Compare 40/84 and 20/90

40/84 is greater than 20/90

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 90 is 1260
  2. For the 1st fraction, since 84 × 15 = 1260,
    40/84 = 40 × 15/84 × 15 = 600/1260
  3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
    20/90 = 20 × 14/90 × 14 = 280/1260
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 600/1260 > 280/1260 or 40/84 > 20/90

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