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Subtract 28/20 from 63/7

1st number: 9 0/7, 2nd number: 1 8/20

63/7 - 28/20 is 38/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 7 × 20 = 140,
    63/7 = 63 × 20/7 × 20 = 1260/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    28/20 = 28 × 7/20 × 7 = 196/140
  4. Subtract the two like fractions:
    1260/140 - 196/140 = 1260 - 196/140 = 1064/140
  5. After reducing the fraction, the answer is 38/5
  6. In mixed form: 73/5

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