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Subtract 4/18 from 3/7

3/7 - 4/18 is 13/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 18 is 126
  2. For the 1st fraction, since 7 × 18 = 126,
    3/7 = 3 × 18/7 × 18 = 54/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    4/18 = 4 × 7/18 × 7 = 28/126
  4. Subtract the two fractions:
    54/126 - 28/126 = 54 - 28/126 = 26/126
  5. After reducing the fraction, the answer is 13/63

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