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Compare 21/70 and 20/36

21/70 is smaller than 20/36

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 36 is 1260
  2. For the 1st fraction, since 70 × 18 = 1260,
    21/70 = 21 × 18/70 × 18 = 378/1260
  3. Likewise, for the 2nd fraction, since 36 × 35 = 1260,
    20/36 = 20 × 35/36 × 35 = 700/1260
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 378/1260 < 700/1260 or 21/70 < 20/36

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