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Compare 9/2 and 21/4

1st number: 4 1/2, 2nd number: 5 1/4

9/2 is smaller than 21/4

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 4 is 4
  2. For the 1st fraction, since 2 × 2 = 4,
    9/2 = 9 × 2/2 × 2 = 18/4
  3. Likewise, for the 2nd fraction, since 4 × 1 = 4,
    21/4 = 21 × 1/4 × 1 = 21/4
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 18/4 < 21/4 or 9/2 < 21/4

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