Answers

Subtract 10/81 from 9/4

1^st number: 2 1/4, 2^nd number: 10/81

9/4 - 10/81 is 689/324.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 81 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 4 × 81 = 324,
   9/4 = 9 × 81/4 × 81 = 729/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   10/81 = 10 × 4/81 × 4 = 40/324
4. Subtract the two like fractions:
   729/324 - 40/324 = 729 - 40/324 = 689/324
5. In mixed form: 241/324

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