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Subtract 12/20 from 21/35

21/35 - 12/20 is 0/1.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 35 × 4 = 140,
    21/35 = 21 × 4/35 × 4 = 84/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    12/20 = 12 × 7/20 × 7 = 84/140
  4. Subtract the two like fractions:
    84/140 - 84/140 = 84 - 84/140 = 0/140
  5. The answer is 0

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