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Subtract 2/20 from 4/9

4/9 - 2/20 is 31/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 20 is 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,
    2/20 = 2 × 9/20 × 9 = 18/180
  4. Subtract the two fractions:
    80/180 - 18/180 = 80 - 18/180 = 62/180
  5. After reducing the fraction, the answer is 31/90

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