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Subtract 28/20 from 72/9

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

72/9 - 28/20 is 33/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 9 × 20 = 180,
    72/9 = 72 × 20/9 × 20 = 1440/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    28/20 = 28 × 9/20 × 9 = 252/180
  4. Subtract the two like fractions:
    1440/180 - 252/180 = 1440 - 252/180 = 1188/180
  5. After reducing the fraction, the answer is 33/5
  6. In mixed form: 63/5

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