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Subtract 4/9 from 6/20

6/20 - 4/9 is -13/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 9 is 180
  2. For the 1st fraction, since 20 × 9 = 180,
    6/20 = 6 × 9/20 × 9 = 54/180
  3. Likewise, for the 2nd fraction, since 9 × 20 = 180,
    4/9 = 4 × 20/9 × 20 = 80/180
  4. Subtract the two fractions:
    54/180 - 80/180 = 54 - 80/180 = -26/180
  5. After reducing the fraction, the answer is -13/90

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