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Subtract 80/72 from 1/15

1st number: 1/15, 2nd number: 1 8/72

1/15 - 80/72 is -47/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 15 × 24 = 360,
    1/15 = 1 × 24/15 × 24 = 24/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    80/72 = 80 × 5/72 × 5 = 400/360
  4. Subtract the two like fractions:
    24/360 - 400/360 = 24 - 400/360 = -376/360
  5. After reducing the fraction, the answer is -47/45

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