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Subtract 7/20 from 4/15

4/15 - 7/20 is -1/12.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 20 is 60
  2. For the 1st fraction, since 15 × 4 = 60,
    4/15 = 4 × 4/15 × 4 = 16/60
  3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
    7/20 = 7 × 3/20 × 3 = 21/60
  4. Subtract the two fractions:
    16/60 - 21/60 = 16 - 21/60 = -5/60
  5. After reducing the fraction, the answer is -1/12

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