Answers

Subtract 8/15 from 81/28

1^st number: 2 25/28, 2^nd number: 8/15

81/28 - 8/15 is 991/420.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 15 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 28 × 15 = 420,
   81/28 = 81 × 15/28 × 15 = 1215/420
3. Likewise, for the 2nd fraction, since 15 × 28 = 420,
   8/15 = 8 × 28/15 × 28 = 224/420
4. Subtract the two like fractions:
   1215/420 - 224/420 = 1215 - 224/420 = 991/420
5. In mixed form: 2151/420

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