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Subtract 25/63 from 4/42

4/42 - 25/63 is -19/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 63 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 42 × 3 = 126,
    4/42 = 4 × 3/42 × 3 = 12/126
  3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
    25/63 = 25 × 2/63 × 2 = 50/126
  4. Subtract the two like fractions:
    12/126 - 50/126 = 12 - 50/126 = -38/126
  5. After reducing the fraction, the answer is -19/63

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