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Subtract 28/18 from 5/42

1st number: 5/42, 2nd number: 1 10/18

5/42 - 28/18 is -181/126.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 18 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 42 × 3 = 126,
    5/42 = 5 × 3/42 × 3 = 15/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    28/18 = 28 × 7/18 × 7 = 196/126
  4. Subtract the two like fractions:
    15/126 - 196/126 = 15 - 196/126 = -181/126

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