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Compare 1/21 and 5/9

1/21 is smaller than 5/9

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 9 is 63
  2. For the 1st fraction, since 21 × 3 = 63,
    1/21 = 1 × 3/21 × 3 = 3/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    5/9 = 5 × 7/9 × 7 = 35/63
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 3/63 < 35/63 or 1/21 < 5/9

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