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Subtract 21/16 from 90/5

1st number: 18 0/5, 2nd number: 1 5/16

90/5 - 21/16 is 267/16.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 16 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 5 × 16 = 80,
    90/5 = 90 × 16/5 × 16 = 1440/80
  3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
    21/16 = 21 × 5/16 × 5 = 105/80
  4. Subtract the two like fractions:
    1440/80 - 105/80 = 1440 - 105/80 = 1335/80
  5. After reducing the fraction, the answer is 267/16
  6. In mixed form: 1611/16

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