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Subtract 3/10 from 21/16

1st number: 1 5/16, 2nd number: 3/10

21/16 - 3/10 is 81/80.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 10 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 10 × 8 = 80,
    3/10 = 3 × 8/10 × 8 = 24/80
  4. Subtract the two like fractions:
    105/80 - 24/80 = 105 - 24/80 = 81/80
  5. In mixed form: 11/80

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