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Subtract 3/12 from 7/20

7/20 - 3/12 is 1/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 12 is 60
  2. For the 1st fraction, since 20 × 3 = 60,
    7/20 = 7 × 3/20 × 3 = 21/60
  3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
    3/12 = 3 × 5/12 × 5 = 15/60
  4. Subtract the two fractions:
    21/60 - 15/60 = 21 - 15/60 = 6/60
  5. After reducing the fraction, the answer is 1/10

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