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Compare 8/10 and 9/21

8/10 is greater than 9/21

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 21 is 210
  2. For the 1st fraction, since 10 × 21 = 210,
    8/10 = 8 × 21/10 × 21 = 168/210
  3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
    9/21 = 9 × 10/21 × 10 = 90/210
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 168/210 > 90/210 or 8/10 > 9/21

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