Answers

Subtract 25/9 from 90/98

1^st number: 90/98, 2^nd number: 2 7/9

90/98 - 25/9 is -820/441.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 9 is 882
   
   Next, find the equivalent fraction of both fractional numbers with denominator 882
2. For the 1st fraction, since 98 × 9 = 882,
   90/98 = 90 × 9/98 × 9 = 810/882
3. Likewise, for the 2nd fraction, since 9 × 98 = 882,
   25/9 = 25 × 98/9 × 98 = 2450/882
4. Subtract the two like fractions:
   810/882 - 2450/882 = 810 - 2450/882 = -1640/882
5. After reducing the fraction, the answer is -820/441

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