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Subtract 1/18 from 5/7

5/7 - 1/18 is 83/126.

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,
    5/7 = 5 × 18/7 × 18 = 90/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    1/18 = 1 × 7/18 × 7 = 7/126
  4. Subtract the two fractions:
    90/126 - 7/126 = 90 - 7/126 = 83/126

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