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Subtract 27/7 from 63/18

1st number: 3 9/18, 2nd number: 3 6/7

63/18 - 27/7 is -5/14.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 7 is 126
  2. For the 1st fraction, since 18 × 7 = 126,
    63/18 = 63 × 7/18 × 7 = 441/126
  3. Likewise, for the 2nd fraction, since 7 × 18 = 126,
    27/7 = 27 × 18/7 × 18 = 486/126
  4. Subtract the two fractions:
    441/126 - 486/126 = 441 - 486/126 = -45/126
  5. After reducing the fraction, the answer is -5/14

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