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Subtract 63/70 from 24/84

24/84 - 63/70 is -43/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 70 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 84 × 5 = 420,
    24/84 = 24 × 5/84 × 5 = 120/420
  3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
    63/70 = 63 × 6/70 × 6 = 378/420
  4. Subtract the two like fractions:
    120/420 - 378/420 = 120 - 378/420 = -258/420
  5. After reducing the fraction, the answer is -43/70

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