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Subtract 8/7 from 10/9

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

10/9 - 8/7 is -2/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 7 is 63
  2. For the 1st fraction, since 9 × 7 = 63,
    10/9 = 10 × 7/9 × 7 = 70/63
  3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
    8/7 = 8 × 9/7 × 9 = 72/63
  4. Subtract the two fractions:
    70/63 - 72/63 = 70 - 72/63 = -2/63

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