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Subtract 16/7 from 1/20

1st number: 1/20, 2nd number: 2 2/7

1/20 - 16/7 is -313/140.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    1/20 = 1 × 7/20 × 7 = 7/140
  3. Likewise, for the 2nd fraction, since 7 × 20 = 140,
    16/7 = 16 × 20/7 × 20 = 320/140
  4. Subtract the two like fractions:
    7/140 - 320/140 = 7 - 320/140 = -313/140

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