Answers

Subtract 25/81 from 15/8

1^st number: 1 7/8, 2^nd number: 25/81

15/8 - 25/81 is 1015/648.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 81 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 8 × 81 = 648,
   15/8 = 15 × 81/8 × 81 = 1215/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   25/81 = 25 × 8/81 × 8 = 200/648
4. Subtract the two like fractions:
   1215/648 - 200/648 = 1215 - 200/648 = 1015/648
5. In mixed form: 1367/648

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