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Subtract 12/10 from 3/7

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

3/7 - 12/10 is -27/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 10 is 70

    Next, find the equivalent fraction of both fractional numbers with denominator 70
  2. For the 1st fraction, since 7 × 10 = 70,
    3/7 = 3 × 10/7 × 10 = 30/70
  3. Likewise, for the 2nd fraction, since 10 × 7 = 70,
    12/10 = 12 × 7/10 × 7 = 84/70
  4. Subtract the two like fractions:
    30/70 - 84/70 = 30 - 84/70 = -54/70
  5. After reducing the fraction, the answer is -27/35

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