Answers

Subtract 6/81 from 18/15

1^st number: 1 3/15, 2^nd number: 6/81

18/15 - 6/81 is 152/135.

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,
   18/15 = 18 × 27/15 × 27 = 486/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   6/81 = 6 × 5/81 × 5 = 30/405
4. Subtract the two like fractions:
   486/405 - 30/405 = 486 - 30/405 = 456/405
5. After reducing the fraction, the answer is 152/135
6. In mixed form: 117/135

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