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Subtract 42/20 from 5/9

1st number: 5/9, 2nd number: 2 2/20

5/9 - 42/20 is -139/90.

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,
    5/9 = 5 × 20/9 × 20 = 100/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    42/20 = 42 × 9/20 × 9 = 378/180
  4. Subtract the two like fractions:
    100/180 - 378/180 = 100 - 378/180 = -278/180
  5. After reducing the fraction, the answer is -139/90

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