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Compare 20/72 and 20/30

20/72 is smaller than 20/30

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 30 is 360
  2. For the 1st fraction, since 72 × 5 = 360,
    20/72 = 20 × 5/72 × 5 = 100/360
  3. Likewise, for the 2nd fraction, since 30 × 12 = 360,
    20/30 = 20 × 12/30 × 12 = 240/360
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 100/360 < 240/360 or 20/72 < 20/30

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