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Subtract 90/63 from 12/36

1st number: 12/36, 2nd number: 1 27/63

12/36 - 90/63 is -23/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 63 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 36 × 7 = 252,
    12/36 = 12 × 7/36 × 7 = 84/252
  3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
    90/63 = 90 × 4/63 × 4 = 360/252
  4. Subtract the two like fractions:
    84/252 - 360/252 = 84 - 360/252 = -276/252
  5. After reducing the fraction, the answer is -23/21

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