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Subtract 9/40 from 27/49

27/49 - 9/40 is 639/1960.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 40 is 1960

    Next, find the equivalent fraction of both fractional numbers with denominator 1960
  2. For the 1st fraction, since 49 × 40 = 1960,
    27/49 = 27 × 40/49 × 40 = 1080/1960
  3. Likewise, for the 2nd fraction, since 40 × 49 = 1960,
    9/40 = 9 × 49/40 × 49 = 441/1960
  4. Subtract the two like fractions:
    1080/1960 - 441/1960 = 1080 - 441/1960 = 639/1960

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