Answers

Subtract 1/81 from 18/9

1^st number: 2 0/9, 2^nd number: 1/81

18/9 - 1/81 is 161/81.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 81 is 81
   
   Next, find the equivalent fraction of both fractional numbers with denominator 81
2. For the 1st fraction, since 9 × 9 = 81,
   18/9 = 18 × 9/9 × 9 = 162/81
3. Likewise, for the 2nd fraction, since 81 × 1 = 81,
   1/81 = 1 × 1/81 × 1 = 1/81
4. Subtract the two like fractions:
   162/81 - 1/81 = 162 - 1/81 = 161/81
5. In mixed form: 180/81

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