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Subtract 81/56 from 42/50

1st number: 42/50, 2nd number: 1 25/56

42/50 - 81/56 is -849/1400.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 50 and 56 is 1400

    Next, find the equivalent fraction of both fractional numbers with denominator 1400
  2. For the 1st fraction, since 50 × 28 = 1400,
    42/50 = 42 × 28/50 × 28 = 1176/1400
  3. Likewise, for the 2nd fraction, since 56 × 25 = 1400,
    81/56 = 81 × 25/56 × 25 = 2025/1400
  4. Subtract the two like fractions:
    1176/1400 - 2025/1400 = 1176 - 2025/1400 = -849/1400

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