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Subtract 7/81 from 50/42

1st number: 1 8/42, 2nd number: 7/81

50/42 - 7/81 is 626/567.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 81 is 1134

    Next, find the equivalent fraction of both fractional numbers with denominator 1134
  2. For the 1st fraction, since 42 × 27 = 1134,
    50/42 = 50 × 27/42 × 27 = 1350/1134
  3. Likewise, for the 2nd fraction, since 81 × 14 = 1134,
    7/81 = 7 × 14/81 × 14 = 98/1134
  4. Subtract the two like fractions:
    1350/1134 - 98/1134 = 1350 - 98/1134 = 1252/1134
  5. After reducing the fraction, the answer is 626/567
  6. In mixed form: 159/567

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