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Subtract 42/63 from 5/84

5/84 - 42/63 is -17/28.

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,
    5/84 = 5 × 3/84 × 3 = 15/252
  3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
    42/63 = 42 × 4/63 × 4 = 168/252
  4. Subtract the two like fractions:
    15/252 - 168/252 = 15 - 168/252 = -153/252
  5. After reducing the fraction, the answer is -17/28

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