Answers

Subtract 20/81 from 12/7

1^st number: 1 5/7, 2^nd number: 20/81

12/7 - 20/81 is 832/567.

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,
   12/7 = 12 × 81/7 × 81 = 972/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   20/81 = 20 × 7/81 × 7 = 140/567
4. Subtract the two like fractions:
   972/567 - 140/567 = 972 - 140/567 = 832/567
5. In mixed form: 1265/567

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