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Subtract 10/18 from 12/20

12/20 - 10/18 is 2/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 18 is 180
  2. For the 1st fraction, since 20 × 9 = 180,
    12/20 = 12 × 9/20 × 9 = 108/180
  3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
    10/18 = 10 × 10/18 × 10 = 100/180
  4. Subtract the two fractions:
    108/180 - 100/180 = 108 - 100/180 = 8/180
  5. After reducing the fraction, the answer is 2/45

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