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Subtract 90/25 from 9/20

1st number: 9/20, 2nd number: 3 15/25

9/20 - 90/25 is -63/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 25 is 100

    Next, find the equivalent fraction of both fractional numbers with denominator 100
  2. For the 1st fraction, since 20 × 5 = 100,
    9/20 = 9 × 5/20 × 5 = 45/100
  3. Likewise, for the 2nd fraction, since 25 × 4 = 100,
    90/25 = 90 × 4/25 × 4 = 360/100
  4. Subtract the two like fractions:
    45/100 - 360/100 = 45 - 360/100 = -315/100
  5. After reducing the fraction, the answer is -63/20

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