Answers

Subtract 40/81 from 30/15

1^st number: 2 0/15, 2^nd number: 40/81

30/15 - 40/81 is 122/81.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 15 × 27 = 405,
   30/15 = 30 × 27/15 × 27 = 810/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   40/81 = 40 × 5/81 × 5 = 200/405
4. Subtract the two like fractions:
   810/405 - 200/405 = 810 - 200/405 = 610/405
5. After reducing the fraction, the answer is 122/81
6. In mixed form: 141/81

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