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Subtract 20/50 from 21/20

1st number: 1 1/20, 2nd number: 20/50

21/20 - 20/50 is 13/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 50 is 100

    Next, find the equivalent fraction of both fractional numbers with denominator 100
  2. For the 1st fraction, since 20 × 5 = 100,
    21/20 = 21 × 5/20 × 5 = 105/100
  3. Likewise, for the 2nd fraction, since 50 × 2 = 100,
    20/50 = 20 × 2/50 × 2 = 40/100
  4. Subtract the two like fractions:
    105/100 - 40/100 = 105 - 40/100 = 65/100
  5. After reducing the fraction, the answer is 13/20

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