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Compare 45/12 and 42/20

1st number: 3 9/12, 2nd number: 2 2/20

45/12 is greater than 42/20

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 20 is 60
  2. For the 1st fraction, since 12 × 5 = 60,
    45/12 = 45 × 5/12 × 5 = 225/60
  3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
    42/20 = 42 × 3/20 × 3 = 126/60
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 225/60 > 126/60 or 45/12 > 42/20

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