Answers

Subtract 81/7 from 4/15

1^st number: 4/15, 2^nd number: 11 4/7

4/15 - 81/7 is -1187/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 7 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 15 × 7 = 105,
   4/15 = 4 × 7/15 × 7 = 28/105
3. Likewise, for the 2nd fraction, since 7 × 15 = 105,
   81/7 = 81 × 15/7 × 15 = 1215/105
4. Subtract the two like fractions:
   28/105 - 1215/105 = 28 - 1215/105 = -1187/105

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