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Subtract 49/80 from 40/72

40/72 - 49/80 is -41/720.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 72 × 10 = 720,
    40/72 = 40 × 10/72 × 10 = 400/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    49/80 = 49 × 9/80 × 9 = 441/720
  4. Subtract the two like fractions:
    400/720 - 441/720 = 400 - 441/720 = -41/720

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