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Subtract 21/7 from 10/12

1st number: 10/12, 2nd number: 3 0/7

10/12 - 21/7 is -13/6.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 7 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 12 × 7 = 84,
    10/12 = 10 × 7/12 × 7 = 70/84
  3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
    21/7 = 21 × 12/7 × 12 = 252/84
  4. Subtract the two like fractions:
    70/84 - 252/84 = 70 - 252/84 = -182/84
  5. After reducing the fraction, the answer is -13/6

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