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Subtract 9/8 from 5/18

1st number: 5/18, 2nd number: 1 1/8

5/18 - 9/8 is -61/72.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 8 is 72
  2. For the 1st fraction, since 18 × 4 = 72,
    5/18 = 5 × 4/18 × 4 = 20/72
  3. Likewise, for the 2nd fraction, since 8 × 9 = 72,
    9/8 = 9 × 9/8 × 9 = 81/72
  4. Subtract the two fractions:
    20/72 - 81/72 = 20 - 81/72 = -61/72

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