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Subtract 7/20 from 7/2

1st number: 3 1/2, 2nd number: 7/20

7/2 - 7/20 is 63/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 20 is 20
  2. For the 1st fraction, since 2 × 10 = 20,
    7/2 = 7 × 10/2 × 10 = 70/20
  3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
    7/20 = 7 × 1/20 × 1 = 7/20
  4. Subtract the two fractions:
    70/20 - 7/20 = 70 - 7/20 = 63/20
  5. In mixed form: 33/20

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