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Subtract 1/42 from 28/18

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

28/18 - 1/42 is 193/126.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    28/18 = 28 × 7/18 × 7 = 196/126
  3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
    1/42 = 1 × 3/42 × 3 = 3/126
  4. Subtract the two like fractions:
    196/126 - 3/126 = 196 - 3/126 = 193/126
  5. In mixed form: 167/126

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