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Subtract 49/16 from 40/72

1st number: 40/72, 2nd number: 3 1/16

40/72 - 49/16 is -361/144.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 16 is 144

    Next, find the equivalent fraction of both fractional numbers with denominator 144
  2. For the 1st fraction, since 72 × 2 = 144,
    40/72 = 40 × 2/72 × 2 = 80/144
  3. Likewise, for the 2nd fraction, since 16 × 9 = 144,
    49/16 = 49 × 9/16 × 9 = 441/144
  4. Subtract the two like fractions:
    80/144 - 441/144 = 80 - 441/144 = -361/144

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