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Subtract 10/9 from 7/8

1st number: 7/8, 2nd number: 1 1/9

7/8 - 10/9 is -17/72.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 9 is 72
  2. For the 1st fraction, since 8 × 9 = 72,
    7/8 = 7 × 9/8 × 9 = 63/72
  3. Likewise, for the 2nd fraction, since 9 × 8 = 72,
    10/9 = 10 × 8/9 × 8 = 80/72
  4. Subtract the two fractions:
    63/72 - 80/72 = 63 - 80/72 = -17/72

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