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Subtract 2/7 from 7/20

7/20 - 2/7 is 9/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 7 is 140
  2. For the 1st fraction, since 20 × 7 = 140,
    7/20 = 7 × 7/20 × 7 = 49/140
  3. Likewise, for the 2nd fraction, since 7 × 20 = 140,
    2/7 = 2 × 20/7 × 20 = 40/140
  4. Subtract the two fractions:
    49/140 - 40/140 = 49 - 40/140 = 9/140

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