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Compare 7/90 and 72/20

1st number: 7/90, 2nd number: 3 12/20

7/90 is smaller than 72/20

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 20 is 180
  2. For the 1st fraction, since 90 × 2 = 180,
    7/90 = 7 × 2/90 × 2 = 14/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    72/20 = 72 × 9/20 × 9 = 648/180
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 14/180 < 648/180 or 7/90 < 72/20

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