Answers

Subtract 10/9 from 18/81

1^st number: 18/81, 2^nd number: 1 1/9

18/81 - 10/9 is -8/9.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 9 is 81
   
   Next, find the equivalent fraction of both fractional numbers with denominator 81
2. For the 1st fraction, since 81 × 1 = 81,
   18/81 = 18 × 1/81 × 1 = 18/81
3. Likewise, for the 2nd fraction, since 9 × 9 = 81,
   10/9 = 10 × 9/9 × 9 = 90/81
4. Subtract the two like fractions:
   18/81 - 90/81 = 18 - 90/81 = -72/81
5. After reducing the fraction, the answer is -8/9

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