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Compare 21/18 and 5/8

1st number: 1 3/18, 2nd number: 5/8

21/18 is greater than 5/8

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 8 is 72
  2. For the 1st fraction, since 18 × 4 = 72,
    21/18 = 21 × 4/18 × 4 = 84/72
  3. Likewise, for the 2nd fraction, since 8 × 9 = 72,
    5/8 = 5 × 9/8 × 9 = 45/72
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 84/72 > 45/72 or 21/18 > 5/8

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