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Subtract 63/90 from 12/15

12/15 - 63/90 is 1/10.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 15 × 6 = 90,
    12/15 = 12 × 6/15 × 6 = 72/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    63/90 = 63 × 1/90 × 1 = 63/90
  4. Subtract the two like fractions:
    72/90 - 63/90 = 72 - 63/90 = 9/90
  5. After reducing the fraction, the answer is 1/10

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