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Subtract 25/63 from 20/84

20/84 - 25/63 is -10/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 63 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 84 × 3 = 252,
    20/84 = 20 × 3/84 × 3 = 60/252
  3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
    25/63 = 25 × 4/63 × 4 = 100/252
  4. Subtract the two like fractions:
    60/252 - 100/252 = 60 - 100/252 = -40/252
  5. After reducing the fraction, the answer is -10/63

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