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Subtract 84/5 from 15/20

1st number: 15/20, 2nd number: 16 4/5

15/20 - 84/5 is -321/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 5 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 20 × 1 = 20,
    15/20 = 15 × 1/20 × 1 = 15/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    84/5 = 84 × 4/5 × 4 = 336/20
  4. Subtract the two like fractions:
    15/20 - 336/20 = 15 - 336/20 = -321/20

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