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Subtract 21/27 from 3/49

3/49 - 21/27 is -316/441.

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,
    3/49 = 3 × 27/49 × 27 = 81/1323
  3. Likewise, for the 2nd fraction, since 27 × 49 = 1323,
    21/27 = 21 × 49/27 × 49 = 1029/1323
  4. Subtract the two like fractions:
    81/1323 - 1029/1323 = 81 - 1029/1323 = -948/1323
  5. After reducing the fraction, the answer is -316/441

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