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Subtract 3/7 from 5/18

5/18 - 3/7 is -19/126.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 7 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    5/18 = 5 × 7/18 × 7 = 35/126
  3. Likewise, for the 2nd fraction, since 7 × 18 = 126,
    3/7 = 3 × 18/7 × 18 = 54/126
  4. Subtract the two like fractions:
    35/126 - 54/126 = 35 - 54/126 = -19/126

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