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Subtract 21/20 from 5/25

1st number: 5/25, 2nd number: 1 1/20

5/25 - 21/20 is -17/20.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 100
  2. For the 1st fraction, since 25 × 4 = 100,
    5/25 = 5 × 4/25 × 4 = 20/100
  3. Likewise, for the 2nd fraction, since 20 × 5 = 100,
    21/20 = 21 × 5/20 × 5 = 105/100
  4. Subtract the two like fractions:
    20/100 - 105/100 = 20 - 105/100 = -85/100
  5. After reducing the fraction, the answer is -17/20

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