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Subtract 1/18 from 9/8

1st number: 1 1/8, 2nd number: 1/18

9/8 - 1/18 is 77/72.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 18 is 72

    Next, find the equivalent fraction of both fractional numbers with denominator 72
  2. For the 1st fraction, since 8 × 9 = 72,
    9/8 = 9 × 9/8 × 9 = 81/72
  3. Likewise, for the 2nd fraction, since 18 × 4 = 72,
    1/18 = 1 × 4/18 × 4 = 4/72
  4. Subtract the two like fractions:
    81/72 - 4/72 = 81 - 4/72 = 77/72
  5. In mixed form: 15/72

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