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Compare 21/70 and 5/7

21/70 is smaller than 5/7

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 7 is 70
  2. For the 1st fraction, since 70 × 1 = 70,
    21/70 = 21 × 1/70 × 1 = 21/70
  3. Likewise, for the 2nd fraction, since 7 × 10 = 70,
    5/7 = 5 × 10/7 × 10 = 50/70
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 21/70 < 50/70 or 21/70 < 5/7

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