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Subtract 28/9 from 10/20

1st number: 10/20, 2nd number: 3 1/9

10/20 - 28/9 is -47/18.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    10/20 = 10 × 9/20 × 9 = 90/180
  3. Likewise, for the 2nd fraction, since 9 × 20 = 180,
    28/9 = 28 × 20/9 × 20 = 560/180
  4. Subtract the two like fractions:
    90/180 - 560/180 = 90 - 560/180 = -470/180
  5. After reducing the fraction, the answer is -47/18

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