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Subtract 25/20 from 90/5

1st number: 18 0/5, 2nd number: 1 5/20

90/5 - 25/20 is 67/4.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 20 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 5 × 4 = 20,
    90/5 = 90 × 4/5 × 4 = 360/20
  3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
    25/20 = 25 × 1/20 × 1 = 25/20
  4. Subtract the two like fractions:
    360/20 - 25/20 = 360 - 25/20 = 335/20
  5. After reducing the fraction, the answer is 67/4
  6. In mixed form: 163/4

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