Answers

Subtract 10/81 from 75/20

1^st number: 3 15/20, 2^nd number: 10/81

75/20 - 10/81 is 1175/324.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 81 is 1620
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1620
2. For the 1st fraction, since 20 × 81 = 1620,
   75/20 = 75 × 81/20 × 81 = 6075/1620
3. Likewise, for the 2nd fraction, since 81 × 20 = 1620,
   10/81 = 10 × 20/81 × 20 = 200/1620
4. Subtract the two like fractions:
   6075/1620 - 200/1620 = 6075 - 200/1620 = 5875/1620
5. After reducing the fraction, the answer is 1175/324
6. In mixed form: 3203/324

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