Answers

Subtract 56/15 from 1/81

1^st number: 1/81, 2^nd number: 3 11/15

1/81 - 56/15 is -1507/405.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 15 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 81 × 5 = 405,
   1/81 = 1 × 5/81 × 5 = 5/405
3. Likewise, for the 2nd fraction, since 15 × 27 = 405,
   56/15 = 56 × 27/15 × 27 = 1512/405
4. Subtract the two like fractions:
   5/405 - 1512/405 = 5 - 1512/405 = -1507/405

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