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Subtract 28/8 from 8/42

1st number: 8/42, 2nd number: 3 4/8

8/42 - 28/8 is -139/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 8 is 168
  2. For the 1st fraction, since 42 × 4 = 168,
    8/42 = 8 × 4/42 × 4 = 32/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    28/8 = 28 × 21/8 × 21 = 588/168
  4. Subtract the two fractions:
    32/168 - 588/168 = 32 - 588/168 = -556/168
  5. After reducing the fraction, the answer is -139/42

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