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Subtract 5/20 from 4/7

4/7 - 5/20 is 9/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 7 × 20 = 140,
    4/7 = 4 × 20/7 × 20 = 80/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    5/20 = 5 × 7/20 × 7 = 35/140
  4. Subtract the two like fractions:
    80/140 - 35/140 = 80 - 35/140 = 45/140
  5. After reducing the fraction, the answer is 9/28

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