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Subtract 12/15 from 5/90

5/90 - 12/15 is -67/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 15 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 90 × 1 = 90,
    5/90 = 5 × 1/90 × 1 = 5/90
  3. Likewise, for the 2nd fraction, since 15 × 6 = 90,
    12/15 = 12 × 6/15 × 6 = 72/90
  4. Subtract the two like fractions:
    5/90 - 72/90 = 5 - 72/90 = -67/90

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