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Subtract 18/80 from 12/15

12/15 - 18/80 is 23/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 80 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 15 × 16 = 240,
    12/15 = 12 × 16/15 × 16 = 192/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    18/80 = 18 × 3/80 × 3 = 54/240
  4. Subtract the two like fractions:
    192/240 - 54/240 = 192 - 54/240 = 138/240
  5. After reducing the fraction, the answer is 23/40

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