Answers

Subtract 28/81 from 3/98

3/98 - 28/81 is -2501/7938.

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,
   3/98 = 3 × 81/98 × 81 = 243/7938
3. Likewise, for the 2nd fraction, since 81 × 98 = 7938,
   28/81 = 28 × 98/81 × 98 = 2744/7938
4. Subtract the two like fractions:
   243/7938 - 2744/7938 = 243 - 2744/7938 = -2501/7938

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