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Subtract 27/4 from 25/42

1st number: 25/42, 2nd number: 6 3/4

25/42 - 27/4 is -517/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 4 is 84
  2. For the 1st fraction, since 42 × 2 = 84,
    25/42 = 25 × 2/42 × 2 = 50/84
  3. Likewise, for the 2nd fraction, since 4 × 21 = 84,
    27/4 = 27 × 21/4 × 21 = 567/84
  4. Subtract the two fractions:
    50/84 - 567/84 = 50 - 567/84 = -517/84

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