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Subtract 30/4 from 8/42

1st number: 8/42, 2nd number: 7 2/4

8/42 - 30/4 is -307/42.

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,
    8/42 = 8 × 2/42 × 2 = 16/84
  3. Likewise, for the 2nd fraction, since 4 × 21 = 84,
    30/4 = 30 × 21/4 × 21 = 630/84
  4. Subtract the two like fractions:
    16/84 - 630/84 = 16 - 630/84 = -614/84
  5. After reducing the fraction, the answer is -307/42

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