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Compare 7/20 and 21/9

1st number: 7/20, 2nd number: 2 3/9

7/20 is smaller than 21/9

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 9 is 180
  2. For the 1st fraction, since 20 × 9 = 180,
    7/20 = 7 × 9/20 × 9 = 63/180
  3. Likewise, for the 2nd fraction, since 9 × 20 = 180,
    21/9 = 21 × 20/9 × 20 = 420/180
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 63/180 < 420/180 or 7/20 < 21/9

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