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Subtract 27/21 from 10/14

1st number: 10/14, 2nd number: 1 6/21

10/14 - 27/21 is -4/7.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 21 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 14 × 3 = 42,
    10/14 = 10 × 3/14 × 3 = 30/42
  3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
    27/21 = 27 × 2/21 × 2 = 54/42
  4. Subtract the two like fractions:
    30/42 - 54/42 = 30 - 54/42 = -24/42
  5. After reducing the fraction, the answer is -4/7

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