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Subtract 20/16 from 90/5

1st number: 18 0/5, 2nd number: 1 4/16

90/5 - 20/16 is 67/4.

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,
    20/16 = 20 × 5/16 × 5 = 100/80
  4. Subtract the two like fractions:
    1440/80 - 100/80 = 1440 - 100/80 = 1340/80
  5. After reducing the fraction, the answer is 67/4
  6. In mixed form: 163/4

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