Answers

Subtract 8/81 from 72/15

1^st number: 4 12/15, 2^nd number: 8/81

72/15 - 8/81 is 1904/405.

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,
   72/15 = 72 × 27/15 × 27 = 1944/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   8/81 = 8 × 5/81 × 5 = 40/405
4. Subtract the two like fractions:
   1944/405 - 40/405 = 1944 - 40/405 = 1904/405
5. In mixed form: 4284/405

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