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Subtract 9/7 from 1/18

1st number: 1/18, 2nd number: 1 2/7

1/18 - 9/7 is -155/126.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 7 is 126
  2. For the 1st fraction, since 18 × 7 = 126,
    1/18 = 1 × 7/18 × 7 = 7/126
  3. Likewise, for the 2nd fraction, since 7 × 18 = 126,
    9/7 = 9 × 18/7 × 18 = 162/126
  4. Subtract the two fractions:
    7/126 - 162/126 = 7 - 162/126 = -155/126

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