Answers

Subtract 90/54 from 81/98

1^st number: 81/98, 2^nd number: 1 36/54

81/98 - 90/54 is -247/294.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 54 is 2646
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2646
2. For the 1st fraction, since 98 × 27 = 2646,
   81/98 = 81 × 27/98 × 27 = 2187/2646
3. Likewise, for the 2nd fraction, since 54 × 49 = 2646,
   90/54 = 90 × 49/54 × 49 = 4410/2646
4. Subtract the two like fractions:
   2187/2646 - 4410/2646 = 2187 - 4410/2646 = -2223/2646
5. After reducing the fraction, the answer is -247/294

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