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Subtract 9/20 from 1/3

1/3 - 9/20 is -7/60.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 20 is 60
  2. For the 1st fraction, since 3 × 20 = 60,
    1/3 = 1 × 20/3 × 20 = 20/60
  3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
    9/20 = 9 × 3/20 × 3 = 27/60
  4. Subtract the two fractions:
    20/60 - 27/60 = 20 - 27/60 = -7/60

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