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Subtract 3/27 from 8/42

8/42 - 3/27 is 5/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 27 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 42 × 9 = 378,
    8/42 = 8 × 9/42 × 9 = 72/378
  3. Likewise, for the 2nd fraction, since 27 × 14 = 378,
    3/27 = 3 × 14/27 × 14 = 42/378
  4. Subtract the two like fractions:
    72/378 - 42/378 = 72 - 42/378 = 30/378
  5. After reducing the fraction, the answer is 5/63

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