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Subtract 42/63 from 12/75

12/75 - 42/63 is -38/75.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 63 is 1575

    Next, find the equivalent fraction of both fractional numbers with denominator 1575
  2. For the 1st fraction, since 75 × 21 = 1575,
    12/75 = 12 × 21/75 × 21 = 252/1575
  3. Likewise, for the 2nd fraction, since 63 × 25 = 1575,
    42/63 = 42 × 25/63 × 25 = 1050/1575
  4. Subtract the two like fractions:
    252/1575 - 1050/1575 = 252 - 1050/1575 = -798/1575
  5. After reducing the fraction, the answer is -38/75

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