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Subtract 48/72 from 15/20

15/20 - 48/72 is 1/12.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 20 × 18 = 360,
    15/20 = 15 × 18/20 × 18 = 270/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    48/72 = 48 × 5/72 × 5 = 240/360
  4. Subtract the two like fractions:
    270/360 - 240/360 = 270 - 240/360 = 30/360
  5. After reducing the fraction, the answer is 1/12

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