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Compare 12/7 and 45/20

1st number: 1 5/7, 2nd number: 2 5/20

12/7 is smaller than 45/20

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 20 is 140
  2. For the 1st fraction, since 7 × 20 = 140,
    12/7 = 12 × 20/7 × 20 = 240/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    45/20 = 45 × 7/20 × 7 = 315/140
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 240/140 < 315/140 or 12/7 < 45/20

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