Answers

Subtract 4/81 from 15/7

1^st number: 2 1/7, 2^nd number: 4/81

15/7 - 4/81 is 1187/567.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 81 is 567
   
   Next, find the equivalent fraction of both fractional numbers with denominator 567
2. For the 1st fraction, since 7 × 81 = 567,
   15/7 = 15 × 81/7 × 81 = 1215/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   4/81 = 4 × 7/81 × 7 = 28/567
4. Subtract the two like fractions:
   1215/567 - 28/567 = 1215 - 28/567 = 1187/567
5. In mixed form: 253/567

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