Answers

Subtract 63/81 from 1/98

1/98 - 63/81 is -677/882.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 81 is 7938
   
   Next, find the equivalent fraction of both fractional numbers with denominator 7938
2. For the 1st fraction, since 98 × 81 = 7938,
   1/98 = 1 × 81/98 × 81 = 81/7938
3. Likewise, for the 2nd fraction, since 81 × 98 = 7938,
   63/81 = 63 × 98/81 × 98 = 6174/7938
4. Subtract the two like fractions:
   81/7938 - 6174/7938 = 81 - 6174/7938 = -6093/7938
5. After reducing the fraction, the answer is -677/882

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