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Subtract 12/4 from 7/42

1st number: 7/42, 2nd number: 3 0/4

7/42 - 12/4 is -17/6.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 4 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 42 × 2 = 84,
    7/42 = 7 × 2/42 × 2 = 14/84
  3. Likewise, for the 2nd fraction, since 4 × 21 = 84,
    12/4 = 12 × 21/4 × 21 = 252/84
  4. Subtract the two like fractions:
    14/84 - 252/84 = 14 - 252/84 = -238/84
  5. After reducing the fraction, the answer is -17/6

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