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Compare 42/21 and 9/10

1st number: 2 0/21, 2nd number: 9/10

42/21 is greater than 9/10

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 10 is 210
  2. For the 1st fraction, since 21 × 10 = 210,
    42/21 = 42 × 10/21 × 10 = 420/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    9/10 = 9 × 21/10 × 21 = 189/210
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 420/210 > 189/210 or 42/21 > 9/10

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