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Subtract 5/20 from 21/16

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

21/16 - 5/20 is 17/16.

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,
    21/16 = 21 × 5/16 × 5 = 105/80
  3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
    5/20 = 5 × 4/20 × 4 = 20/80
  4. Subtract the two like fractions:
    105/80 - 20/80 = 105 - 20/80 = 85/80
  5. After reducing the fraction, the answer is 17/16
  6. In mixed form: 11/16

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