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Subtract 42/9 from 50/42

1st number: 1 8/42, 2nd number: 4 6/9

50/42 - 42/9 is -73/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 9 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 42 × 3 = 126,
    50/42 = 50 × 3/42 × 3 = 150/126
  3. Likewise, for the 2nd fraction, since 9 × 14 = 126,
    42/9 = 42 × 14/9 × 14 = 588/126
  4. Subtract the two like fractions:
    150/126 - 588/126 = 150 - 588/126 = -438/126
  5. After reducing the fraction, the answer is -73/21

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