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Subtract 4/9 from 10/20

10/20 - 4/9 is 1/18.

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,
    10/20 = 10 × 9/20 × 9 = 90/180
  3. Likewise, for the 2nd fraction, since 9 × 20 = 180,
    4/9 = 4 × 20/9 × 20 = 80/180
  4. Subtract the two fractions:
    90/180 - 80/180 = 90 - 80/180 = 10/180
  5. After reducing the fraction, the answer is 1/18

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