Answers

Subtract 6/63 from 7/81

7/81 - 6/63 is -5/567.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 63 is 567
   
   Next, find the equivalent fraction of both fractional numbers with denominator 567
2. For the 1st fraction, since 81 × 7 = 567,
   7/81 = 7 × 7/81 × 7 = 49/567
3. Likewise, for the 2nd fraction, since 63 × 9 = 567,
   6/63 = 6 × 9/63 × 9 = 54/567
4. Subtract the two like fractions:
   49/567 - 54/567 = 49 - 54/567 = -5/567

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