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Subtract 75/54 from 1/7

1st number: 1/7, 2nd number: 1 21/54

1/7 - 75/54 is -157/126.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 54 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 7 × 54 = 378,
    1/7 = 1 × 54/7 × 54 = 54/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    75/54 = 75 × 7/54 × 7 = 525/378
  4. Subtract the two like fractions:
    54/378 - 525/378 = 54 - 525/378 = -471/378
  5. After reducing the fraction, the answer is -157/126

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