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Subtract 21/14 from 1/8

1st number: 1/8, 2nd number: 1 7/14

1/8 - 21/14 is -11/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 14 is 56

    Next, find the equivalent fraction of both fractional numbers with denominator 56
  2. For the 1st fraction, since 8 × 7 = 56,
    1/8 = 1 × 7/8 × 7 = 7/56
  3. Likewise, for the 2nd fraction, since 14 × 4 = 56,
    21/14 = 21 × 4/14 × 4 = 84/56
  4. Subtract the two like fractions:
    7/56 - 84/56 = 7 - 84/56 = -77/56
  5. After reducing the fraction, the answer is -11/8

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