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Subtract 21/20 from 6/16

1st number: 6/16, 2nd number: 1 1/20

6/16 - 21/20 is -27/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 20 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 16 × 5 = 80,
    6/16 = 6 × 5/16 × 5 = 30/80
  3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
    21/20 = 21 × 4/20 × 4 = 84/80
  4. Subtract the two like fractions:
    30/80 - 84/80 = 30 - 84/80 = -54/80
  5. After reducing the fraction, the answer is -27/40

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