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Subtract 15/27 from 42/49

42/49 - 15/27 is 19/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 27 is 1323

    Next, find the equivalent fraction of both fractional numbers with denominator 1323
  2. For the 1st fraction, since 49 × 27 = 1323,
    42/49 = 42 × 27/49 × 27 = 1134/1323
  3. Likewise, for the 2nd fraction, since 27 × 49 = 1323,
    15/27 = 15 × 49/27 × 49 = 735/1323
  4. Subtract the two like fractions:
    1134/1323 - 735/1323 = 1134 - 735/1323 = 399/1323
  5. After reducing the fraction, the answer is 19/63

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