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Subtract 49/20 from 4/9

1st number: 4/9, 2nd number: 2 9/20

4/9 - 49/20 is -361/180.

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,
    4/9 = 4 × 20/9 × 20 = 80/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    49/20 = 49 × 9/20 × 9 = 441/180
  4. Subtract the two like fractions:
    80/180 - 441/180 = 80 - 441/180 = -361/180

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