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Subtract 63/28 from 25/42

1st number: 25/42, 2nd number: 2 7/28

25/42 - 63/28 is -139/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 28 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 28 × 3 = 84,
    63/28 = 63 × 3/28 × 3 = 189/84
  4. Subtract the two fractions:
    50/84 - 189/84 = 50 - 189/84 = -139/84

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