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Subtract 18/9 from 9/10

1st number: 9/10, 2nd number: 2 0/9

9/10 - 18/9 is -11/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 9 is 90
  2. For the 1st fraction, since 10 × 9 = 90,
    9/10 = 9 × 9/10 × 9 = 81/90
  3. Likewise, for the 2nd fraction, since 9 × 10 = 90,
    18/9 = 18 × 10/9 × 10 = 180/90
  4. Subtract the two fractions:
    81/90 - 180/90 = 81 - 180/90 = -99/90
  5. After reducing the fraction, the answer is -11/10

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