Answers

Subtract 84/81 from 6/7

1^st number: 6/7, 2^nd number: 1 3/81

6/7 - 84/81 is -34/189.

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,
   6/7 = 6 × 81/7 × 81 = 486/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   84/81 = 84 × 7/81 × 7 = 588/567
4. Subtract the two like fractions:
   486/567 - 588/567 = 486 - 588/567 = -102/567
5. After reducing the fraction, the answer is -34/189

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